qcacmn: Add QCA vendor command to support thermal mitigation

Add a QCA vendor sub command QCA_NL80211_VENDOR_SUBCMD_THERMAL_CMD
to implement thermal mitigation. Different operations required to
implement this feature can be specified in
QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_VALUE,
QCA_WLAN_VENDOR_ATTR_THERMAL_LEVEL.

Userspace requests the driver to enable/disable thermal mitigation
based on the thermal state of the device and wlan host performs the
required appropriate action. wlan host driver maps the thermal level
provided from userspace via vendor command to corresponding duty
cycle off percent value and duty cycle value,send
WMI_THERM_THROT_SET_CONF_CMDID cmd to FW.

Make changes to perform vendor command handling, mapping thermal level
to duty cycle value and communicating the thermal information to FW.

Change-Id: Idc9c87dcb4275122980713471544baa23e705a53
CRs-Fixed: 2610403

os_if/linux/qca_vendor.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2020 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -574,6 +574,7 @@ enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_GET_SAR_LIMITS = 164,
 	QCA_NL80211_VENDOR_SUBCMD_WLAN_MAC_INFO = 165,
 	QCA_NL80211_VENDOR_SUBCMD_SET_QDEPTH_THRESH = 166,
+	QCA_NL80211_VENDOR_SUBCMD_THERMAL_CMD = 167,
 	/* Wi-Fi test configuration subcommand */
 	QCA_NL80211_VENDOR_SUBCMD_WIFI_TEST_CONFIGURATION = 169,
 	QCA_NL80211_VENDOR_SUBCMD_NAN_EXT = 171,
@@ -3555,6 +3556,11 @@ enum qca_wlan_vendor_attr_nd_offload {
  * @QCA_WLAN_VENDOR_FEATURE_TWT: Device supports TWT (Target Wake Time).
  * @QCA_WLAN_VENDOR_FEATURE_11AX: Device supports 802.11ax (HE)
  * @QCA_WLAN_VENDOR_FEATURE_6GHZ_SUPPORT: Device supports 6 GHz band operation
+ * @QCA_WLAN_VENDOR_FEATURE_THERMAL_CONFIG: Device is capable of receiving
+ *	and applying thermal configuration through
+ *	%QCA_WLAN_VENDOR_ATTR_THERMAL_LEVEL and
+ *	%QCA_WLAN_VENDOR_ATTR_THERMAL_COMPLETION_WINDOW attributes from
+ *	userspace.
  * @NUM_QCA_WLAN_VENDOR_FEATURES: Number of assigned feature bits
  */
 enum qca_wlan_vendor_features {
@@ -3569,6 +3575,7 @@ enum qca_wlan_vendor_features {
 	QCA_WLAN_VENDOR_FEATURE_TWT = 8,
 	QCA_WLAN_VENDOR_FEATURE_11AX = 9,
 	QCA_WLAN_VENDOR_FEATURE_6GHZ_SUPPORT = 10,
+	QCA_WLAN_VENDOR_FEATURE_THERMAL_CONFIG = 11,
 
 	NUM_QCA_WLAN_VENDOR_FEATURES /* keep last */
 };
@@ -4723,6 +4730,93 @@ enum qca_wlan_vendor_attr_wake_stats {
 		QCA_WLAN_VENDOR_GET_WAKE_STATS_AFTER_LAST - 1,
 };
 
+/**
+ * enum qca_wlan_vendor_thermal_level - Defines various thermal levels
+ * configured by userspace to the driver/firmware. The values will be
+ * encapsulated in QCA_WLAN_VENDOR_ATTR_THERMAL_LEVEL attribute.
+ * The driver/firmware takes necessary actions requested by userspace
+ * such as throttling wifi tx etc. in order to mitigate high temperature.
+ *
+ * @QCA_WLAN_VENDOR_THERMAL_LEVEL_NONE: Stop/clear all throttling actions.
+ * @QCA_WLAN_VENDOR_THERMAL_LEVEL_LIGHT: Throttle tx lightly.
+ * @QCA_WLAN_VENDOR_THERMAL_LEVEL_MODERATE: Throttle tx moderately.
+ * @QCA_WLAN_VENDOR_THERMAL_LEVEL_SEVERE: Throttle tx severely.
+ * @QCA_WLAN_VENDOR_THERMAL_LEVEL_CRITICAL: Critical thermal level reached.
+ * @QCA_WLAN_VENDOR_THERMAL_LEVEL_EMERGENCY: Emergency thermal level reached.
+ */
+enum qca_wlan_vendor_thermal_level {
+	QCA_WLAN_VENDOR_THERMAL_LEVEL_NONE = 0,
+	QCA_WLAN_VENDOR_THERMAL_LEVEL_LIGHT = 1,
+	QCA_WLAN_VENDOR_THERMAL_LEVEL_MODERATE = 2,
+	QCA_WLAN_VENDOR_THERMAL_LEVEL_SEVERE = 3,
+	QCA_WLAN_VENDOR_THERMAL_LEVEL_CRITICAL = 4,
+	QCA_WLAN_VENDOR_THERMAL_LEVEL_EMERGENCY = 5,
+};
+
+/**
+ * enum qca_wlan_vendor_attr_thermal_cmd - Vendor subcmd attributes to set
+ * cmd value. Used for NL attributes for data used by
+ * QCA_NL80211_VENDOR_SUBCMD_THERMAL_CMD sub command.
+ */
+enum qca_wlan_vendor_attr_thermal_cmd {
+	QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_INVALID = 0,
+	/*
+	 * The value of command, driver will implement different operations
+	 * according to this value. It uses values defined in
+	 * enum qca_wlan_vendor_attr_thermal_cmd_type.
+	 * u32 attribute.
+	 */
+	QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_VALUE = 1,
+	/*
+	 * Userspace uses this attribute to configure thermal level to
+	 * driver/firmware. Used in request, u32 attribute, possible values
+	 * are defined in enum qca_wlan_vendor_thermal_level.
+	 */
+	QCA_WLAN_VENDOR_ATTR_THERMAL_LEVEL = 2,
+	/*
+	 * Userspace uses this attribute to configure the time in which the
+	 * driver/firmware should complete applying settings it received from
+	 * userspace with QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_SET_LEVEL
+	 * command type. Used in request, u32 attribute, value is in milli
+	 * seconds. A value of zero indicates to apply the settings
+	 * immediately. The driver/firmware can delay applying the configured
+	 * thermal settings within the time specified in this attribute if
+	 * there is any critical ongoing operation.
+	 */
+	QCA_WLAN_VENDOR_ATTR_THERMAL_COMPLETION_WINDOW = 3,
+	/* keep last */
+	QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_MAX =
+		QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_AFTER_LAST - 1
+};
+
+/**
+ * qca_wlan_vendor_attr_thermal_cmd_type: Attribute values for
+ * QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_VALUE to the vendor subcmd
+ * QCA_NL80211_VENDOR_SUBCMD_THERMAL_CMD. This represents the
+ * thermal command types sent to driver.
+ * @QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_GET_PARAMS: Request to
+ * get thermal shutdown configuration parameters for display. Parameters
+ * responded from driver are defined in
+ * enum qca_wlan_vendor_attr_get_thermal_params_rsp.
+ * @QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_GET_TEMPERATURE: Request to
+ * get temperature. Host should respond with a temperature data. It is defined
+ * in enum qca_wlan_vendor_attr_thermal_get_temperature.
+ * @QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_SUSPEND: Request to execute thermal
+ * suspend action.
+ * @QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_RESUME: Request to execute thermal
+ * resume action.
+ * @QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_SET_LEVEL: Configure thermal level to
+ * the driver/firmware.
+ */
+enum qca_wlan_vendor_attr_thermal_cmd_type {
+	QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_GET_PARAMS,
+	QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_GET_TEMPERATURE,
+	QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_SUSPEND,
+	QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_RESUME,
+	QCA_WLAN_VENDOR_ATTR_THERMAL_CMD_TYPE_SET_LEVEL,
+};
+
 /**
  * enum qca_vendor_element_id - QCA Vendor Specific element types
  *