iwlwifi: mvm: Add set NIC temperature debug option (7280d1f0) · Commits · 戴 / test

drivers/net/wireless/iwlwifi/mvm/debugfs.c

+57 −0

Original line number	Diff line number	Diff line
		@@ -257,6 +257,60 @@ static ssize_t iwl_dbgfs_sram_write(struct iwl_mvm mvm, char buf,
		return count;
		}

		static ssize_t iwl_dbgfs_set_nic_temperature_read(struct file *file,
		char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct iwl_mvm *mvm = file->private_data;
		char buf[16];
		int pos;

		if (!mvm->temperature_test)
		pos = scnprintf(buf , sizeof(buf), "disabled\n");
		else
		pos = scnprintf(buf , sizeof(buf), "%d\n", mvm->temperature);

		return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
		}

		/*
		* Set NIC Temperature
		* Cause the driver to ignore the actual NIC temperature reported by the FW
		* Enable: any value between IWL_MVM_DEBUG_SET_TEMPERATURE_MIN -
		* IWL_MVM_DEBUG_SET_TEMPERATURE_MAX
		* Disable: IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE
		*/
		static ssize_t iwl_dbgfs_set_nic_temperature_write(struct iwl_mvm *mvm,
		char *buf, size_t count,
		loff_t *ppos)
		{
		int temperature;

		if (kstrtoint(buf, 10, &temperature))
		return -EINVAL;
		/* not a legal temperature */
		if ((temperature > IWL_MVM_DEBUG_SET_TEMPERATURE_MAX &&
		temperature != IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE) \|\|
		temperature < IWL_MVM_DEBUG_SET_TEMPERATURE_MIN)
		return -EINVAL;

		mutex_lock(&mvm->mutex);
		if (temperature == IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE) {
		mvm->temperature_test = false;
		} else {
		mvm->temperature_test = true;
		mvm->temperature = temperature;
		}
		IWL_DEBUG_TEMP(mvm, "%sabling debug set temperature (temp = %d)\n",
		mvm->temperature_test ? "En" : "Dis" ,
		mvm->temperature);
		/* handle the temperature change */
		iwl_mvm_tt_handler(mvm);
		mutex_unlock(&mvm->mutex);

		return count;
		}

		static ssize_t iwl_dbgfs_stations_read(struct file file, char __user user_buf,
		size_t count, loff_t *ppos)
		{
		@@ -1296,6 +1350,7 @@ MVM_DEBUGFS_READ_WRITE_FILE_OPS(prph_reg, 64);
		MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16);
		MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8);
		MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram, 64);
		MVM_DEBUGFS_READ_WRITE_FILE_OPS(set_nic_temperature, 64);
		MVM_DEBUGFS_READ_FILE_OPS(stations);
		MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
		MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
		@@ -1336,6 +1391,8 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm mvm, struct dentry dbgfs_dir)
		MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR);
		MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR);
		MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR \| S_IRUSR);
		MVM_DEBUGFS_ADD_FILE(set_nic_temperature, mvm->debugfs_dir,
		S_IWUSR \| S_IRUSR);
		MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
		MVM_DEBUGFS_ADD_FILE(fw_error_dump, dbgfs_dir, S_IRUSR);
		MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);

drivers/net/wireless/iwlwifi/mvm/mvm.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -512,6 +512,10 @@ enum {
		D0I3_PENDING_WAKEUP,
		};

		#define IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE 0xff
		#define IWL_MVM_DEBUG_SET_TEMPERATURE_MIN -100
		#define IWL_MVM_DEBUG_SET_TEMPERATURE_MAX 200

		struct iwl_mvm {
		/* for logger access */
		struct device *dev;
		@@ -694,6 +698,12 @@ struct iwl_mvm {
		/* Thermal Throttling and CTkill */
		struct iwl_mvm_tt_mgmt thermal_throttle;
		s32 temperature; /* Celsius */
		/*
		* Debug option to set the NIC temperature. This option makes the
		* driver think this is the actual NIC temperature, and ignore the
		* real temperature that is received from the fw
		*/
		bool temperature_test; /* Debug test temperature is enabled */

		#ifdef CONFIG_NL80211_TESTMODE
		u32 noa_duration;

drivers/net/wireless/iwlwifi/mvm/rx.c

+19 −0

Original line number	Diff line number	Diff line
		@@ -491,10 +491,29 @@ int iwl_mvm_rx_statistics(struct iwl_mvm *mvm,
		.mvm = mvm,
		};

		/*
		* set temperature debug enabled - ignore FW temperature updates
		* and use the user set temperature.
		*/
		if (mvm->temperature_test) {
		if (mvm->temperature < le32_to_cpu(common->temperature))
		IWL_DEBUG_TEMP(mvm,
		"Ignoring FW temperature update that is greater than the debug set temperature (debug temp = %d, fw temp = %d)\n",
		mvm->temperature,
		le32_to_cpu(common->temperature));
		/*
		* skip iwl_mvm_tt_handler since we are in
		* temperature debug mode and we are ignoring
		* the new temperature value
		*/
		goto update;
		}

		if (mvm->temperature != le32_to_cpu(common->temperature)) {
		mvm->temperature = le32_to_cpu(common->temperature);
		iwl_mvm_tt_handler(mvm);
		}
		update:
		iwl_mvm_update_rx_statistics(mvm, stats);

		ieee80211_iterate_active_interfaces(mvm->hw,

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