qcacmn: Provide Rx LDPC support for 2G STA

Currently Rx LDPC is disabled for STA(2G) connection due to
PHY-B hardware limitation. PHY-A can still support RxLDPC, so
make changes such a way that when ever STA is on 2G band and
current hardware mode is non-dbs then enable the Rx LDPC and if
STA is on 2G band and current hardware mode is dbs then disable the
RX LDPC.

Change-Id: Ib0183fea06619056c61e297d3fcfd82d91775dcd
CRs-Fixed: 2046542

umac/cmn_services/policy_mgr/inc/wlan_policy_mgr_api.h

@@ -735,6 +735,9 @@ typedef void (*policy_mgr_nss_update_cback)(struct wlan_objmgr_psoc *psoc,
 /**
  * struct policy_mgr_sme_cbacks - SME Callbacks to be invoked
  * from policy manager
+ * @sme_check_enable_rx_ldpc_sta_ini_item: Get rx ldpc sta ini value
+ * @sme_set_vdev_ies_per_band: Set vdev IEs per band
+ * @sme_issue_same_ap_reassoc_cmd: Issue AP reassoc
  * @sme_get_valid_channels: Get valid channel list
  * @sme_get_nss_for_vdev: Get the allowed nss value for the vdev
  * @sme_soc_set_dual_mac_config: Set the dual MAC scan & FW
@@ -745,6 +748,10 @@ typedef void (*policy_mgr_nss_update_cback)(struct wlan_objmgr_psoc *psoc,
  * @sme_change_mcc_beacon_interval: Set MCC beacon interval to FW
  */
 struct policy_mgr_sme_cbacks {
+	bool (*sme_check_enable_rx_ldpc_sta_ini_item)(void);
+	void (*sme_set_vdev_ies_per_band)(uint8_t vdev_id,
+					  uint8_t is_hw_mode_dbs);
+	QDF_STATUS (*sme_issue_same_ap_reassoc_cmd)(uint8_t session_id);
 	QDF_STATUS (*sme_get_valid_channels)(uint8_t *chan_list,
 		uint32_t *list_len);
 	void (*sme_get_nss_for_vdev)(enum tQDF_ADAPTER_MODE,
@@ -1906,4 +1913,19 @@ uint32_t policy_mgr_get_hw_dbs_nss(struct wlan_objmgr_psoc *psoc,
  * Return: true for success, else false
  */
 bool policy_mgr_is_dnsc_set(struct wlan_objmgr_vdev *vdev);
+
+/**
+ * policy_mgr_find_sta_and_update_caps_with_reassociation() - find sta and
+ *		update HT/VHT caps and do reassociation with same ap
+ * @psoc: PSOC object information
+ * @is_hw_mode_dbs: DBS or NON-DBS hardware mode to use
+ *
+ * This API will find the 2G STA currently active from policy manager table
+ * and update their HT/VHT caps to firmware and trigger self reassociation
+ * with same AP through LFR3 roaming module.
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS policy_mgr_find_sta_and_update_caps_with_reassociation(
+			struct wlan_objmgr_psoc *psoc, uint8_t is_hw_mode_dbs);
 #endif /* __WLAN_POLICY_MGR_API_H */

umac/cmn_services/policy_mgr/src/wlan_policy_mgr_action.c

@@ -423,6 +423,7 @@ QDF_STATUS policy_mgr_next_actions(struct wlan_objmgr_psoc *psoc,
 	QDF_STATUS status = QDF_STATUS_E_FAILURE;
 	struct policy_mgr_hw_mode_params hw_mode;
 	struct dbs_nss nss_dbs;
+	struct policy_mgr_psoc_priv_obj *pm_ctx;
 
 	if (policy_mgr_is_hw_dbs_capable(psoc) == false) {
 		policy_mgr_err("driver isn't dbs capable, no further action needed");
@@ -447,6 +448,12 @@ QDF_STATUS policy_mgr_next_actions(struct wlan_objmgr_psoc *psoc,
 		return QDF_STATUS_E_ALREADY;
 	}
 
+	pm_ctx = policy_mgr_get_context(psoc);
+	if (!pm_ctx) {
+		policy_mgr_err("Invalid context");
+		return QDF_STATUS_E_FAILURE;
+	}
+
 	if ((PM_SBS == action) || (action == PM_SBS_DOWNGRADE)) {
 		if (!policy_mgr_is_hw_sbs_capable(psoc)) {
 			/* No action */
@@ -459,6 +466,31 @@ QDF_STATUS policy_mgr_next_actions(struct wlan_objmgr_psoc *psoc,
 
 	}
 
+	/*
+	 * just check PM_DBS action only, no need to check for
+	 * PM_DBS_DOWNGRADE as it will eventually call PM_DBS. if you check
+	 * for PM_DBS_DOWNGRADE then IE update and self reassoc will happen
+	 * two times back to back as this functon is nested which
+	 * will not make sense. Same things apply for PM_SINGLE_MAC_UPGRADE
+	 * and PM_SINGLE_MAC operations.
+	 */
+	if ((PM_DBS == action) && !hw_mode.dbs_cap &&
+	    pm_ctx->sme_cbacks.sme_check_enable_rx_ldpc_sta_ini_item()) {
+		policy_mgr_notice("Going for DBS, disable rx-ldpc for all 2G STAs");
+		policy_mgr_find_sta_and_update_caps_with_reassociation(psoc,
+								       true);
+	} else if ((PM_SINGLE_MAC == action) && hw_mode.dbs_cap
+		   &&
+		   pm_ctx->sme_cbacks.sme_check_enable_rx_ldpc_sta_ini_item()) {
+		/*
+		 * don't use default RX LDPC which isenabled for 5g and
+		 * disable for 2g
+		 */
+		policy_mgr_notice("Going for SMM, enable rx-ldpc for all 2G STAs");
+		policy_mgr_find_sta_and_update_caps_with_reassociation(psoc,
+								       false);
+	}
+
 	switch (action) {
 	case PM_DBS_DOWNGRADE:
 		/*

umac/cmn_services/policy_mgr/src/wlan_policy_mgr_core.c

@@ -2252,6 +2252,50 @@ static void policy_mgr_nss_update_cb(struct wlan_objmgr_psoc *psoc,
 	return;
 }
 
+QDF_STATUS policy_mgr_find_sta_and_update_caps_with_reassociation(
+			struct wlan_objmgr_psoc *psoc, uint8_t is_hw_mode_dbs)
+{
+	struct policy_mgr_psoc_priv_obj *pm_ctx;
+	QDF_STATUS status = QDF_STATUS_SUCCESS;
+	uint32_t index, count;
+	uint32_t list[MAX_NUMBER_OF_CONC_CONNECTIONS];
+	uint32_t conn_index = 0;
+	uint32_t vdev_id, channel;
+
+	pm_ctx = policy_mgr_get_context(psoc);
+	if (!pm_ctx) {
+		policy_mgr_err("Invalid Context");
+		return QDF_STATUS_E_FAILURE;
+	}
+
+	count = policy_mgr_mode_specific_connection_count(psoc, PM_STA_MODE,
+							  list);
+	for (index = 0; index < count; index++) {
+		qdf_mutex_acquire(&pm_ctx->qdf_conc_list_lock);
+		vdev_id = pm_conc_connection_list[list[index]].vdev_id;
+		channel = pm_conc_connection_list[list[index]].chan;
+		qdf_mutex_release(&pm_ctx->qdf_conc_list_lock);
+		conn_index = policy_mgr_get_connection_for_vdev_id(psoc,
+								   vdev_id);
+		if (MAX_NUMBER_OF_CONC_CONNECTIONS == conn_index) {
+			policy_mgr_err("connection not found for vdev %d",
+				       vdev_id);
+			continue;
+		}
+		/* do it only for 2.4GHz channels */
+		if (!WLAN_REG_IS_24GHZ_CH(channel))
+			continue;
+		pm_ctx->sme_cbacks.sme_set_vdev_ies_per_band(vdev_id,
+							     is_hw_mode_dbs);
+		status = pm_ctx->sme_cbacks.sme_issue_same_ap_reassoc_cmd(
+							vdev_id);
+		if (QDF_STATUS_E_FAILURE == status)
+			policy_mgr_err("Self reassoc failed %d", status);
+	}
+
+	return status;
+}
+
 /**
  * policy_mgr_complete_action() - initiates actions needed on
  * current connections once channel has been decided for the new

umac/cmn_services/policy_mgr/src/wlan_policy_mgr_init_deinit.c

@@ -501,6 +501,12 @@ QDF_STATUS policy_mgr_register_sme_cb(struct wlan_objmgr_psoc *psoc,
 		return QDF_STATUS_E_FAILURE;
 	}
 
+	pm_ctx->sme_cbacks.sme_check_enable_rx_ldpc_sta_ini_item =
+		sme_cbacks->sme_check_enable_rx_ldpc_sta_ini_item;
+	pm_ctx->sme_cbacks.sme_set_vdev_ies_per_band =
+		sme_cbacks->sme_set_vdev_ies_per_band;
+	pm_ctx->sme_cbacks.sme_issue_same_ap_reassoc_cmd =
+		sme_cbacks->sme_issue_same_ap_reassoc_cmd;
 	pm_ctx->sme_cbacks.sme_get_nss_for_vdev =
 		sme_cbacks->sme_get_nss_for_vdev;
 	pm_ctx->sme_cbacks.sme_get_valid_channels =