qcacmn: Get CCA from firmware

Requirement is to get CCA from frmware when connection fails due to
assoc/auth/probe response timeout. These are common changes to get
CCA from firmware.

Change-Id: I062343ed065d7b0c38b9e3b24ecfa9851b9b1537
CRs-Fixed: 2031843

wmi/inc/wmi_unified_api.h

@@ -675,6 +675,16 @@ QDF_STATUS wmi_unified_get_stats_cmd(void *wmi_hdl,
 		       struct pe_stats_req  *get_stats_param,
 			   uint8_t addr[IEEE80211_ADDR_LEN]);
 
+/**
+ * wmi_unified_congestion_request_cmd() - send request to fw to get CCA
+ * @wmi_hdl: wma handle
+ * @vdev_id: vdev id
+ *
+ * Return: QDF_STATUS_SUCCESS on success and QDF_STATUS_E_FAILURE for failure
+ */
+QDF_STATUS wmi_unified_congestion_request_cmd(void *wmi_hdl,
+		uint8_t vdev_id);
+
 QDF_STATUS wmi_unified_snr_request_cmd(void *wmi_hdl);
 
 QDF_STATUS wmi_unified_snr_cmd(void *wmi_hdl, uint8_t vdev_id);

wmi/inc/wmi_unified_priv.h

@@ -477,6 +477,9 @@ QDF_STATUS (*send_get_stats_cmd)(wmi_unified_t wmi_handle,
 		       struct pe_stats_req  *get_stats_param,
 			   uint8_t addr[IEEE80211_ADDR_LEN]);
 
+QDF_STATUS (*send_congestion_cmd)(wmi_unified_t wmi_handle,
+			A_UINT8 vdev_id);
+
 QDF_STATUS (*send_snr_request_cmd)(wmi_unified_t wmi_handle);
 
 QDF_STATUS (*send_snr_cmd)(wmi_unified_t wmi_handle, uint8_t vdev_id);

wmi/src/wmi_unified_api.c

@@ -2051,6 +2051,25 @@ QDF_STATUS wmi_unified_get_stats_cmd(void *wmi_hdl,
 	return QDF_STATUS_E_FAILURE;
 }
 
+/**
+ * wmi_unified_congestion_request_cmd() - send request to fw to get CCA
+ * @wmi_hdl: wma handle
+ * @vdev_id: vdev id
+ *
+ * Return: QDF_STATUS_SUCCESS on success and QDF_STATUS_E_FAILURE for failure
+ */
+QDF_STATUS wmi_unified_congestion_request_cmd(void *wmi_hdl,
+		uint8_t vdev_id)
+{
+	wmi_unified_t wmi_handle = (wmi_unified_t) wmi_hdl;
+
+	if (wmi_handle->ops->send_congestion_cmd)
+		return wmi_handle->ops->send_congestion_cmd(wmi_handle,
+			   vdev_id);
+
+	return QDF_STATUS_E_FAILURE;
+}
+
 /**
  * wmi_unified_process_ll_stats_set_cmd() - link layer stats set request
  * @wmi_handle:       wmi handle

wmi/src/wmi_unified_tlv.c

@@ -7369,6 +7369,51 @@ static QDF_STATUS send_get_stats_cmd_tlv(wmi_unified_t wmi_handle,
 
 }
 
+/**
+ * send_congestion_cmd_tlv() - send request to fw to get CCA
+ * @wmi_handle: wmi handle
+ * @vdev_id: vdev id
+ *
+ * Return: CDF status
+ */
+static QDF_STATUS send_congestion_cmd_tlv(wmi_unified_t wmi_handle,
+			A_UINT8 vdev_id)
+{
+	wmi_buf_t buf;
+	wmi_request_stats_cmd_fixed_param *cmd;
+	uint8_t len;
+	uint8_t *buf_ptr;
+
+	len = sizeof(*cmd);
+	buf = wmi_buf_alloc(wmi_handle, len);
+	if (!buf) {
+		WMI_LOGE("%s: Failed to allocate wmi buffer", __func__);
+		return QDF_STATUS_E_FAILURE;
+	}
+
+	buf_ptr = wmi_buf_data(buf);
+	cmd = (wmi_request_stats_cmd_fixed_param *)buf_ptr;
+	WMITLV_SET_HDR(&cmd->tlv_header,
+		       WMITLV_TAG_STRUC_wmi_request_stats_cmd_fixed_param,
+		       WMITLV_GET_STRUCT_TLVLEN
+			       (wmi_request_stats_cmd_fixed_param));
+
+	cmd->stats_id = WMI_REQUEST_CONGESTION_STAT;
+	cmd->vdev_id = vdev_id;
+	WMI_LOGD("STATS REQ VDEV_ID:%d stats_id %d -->",
+			cmd->vdev_id, cmd->stats_id);
+
+	if (wmi_unified_cmd_send(wmi_handle, buf, len,
+				 WMI_REQUEST_STATS_CMDID)) {
+		WMI_LOGE("%s: Failed to send WMI_REQUEST_STATS_CMDID",
+			 __func__);
+		wmi_buf_free(buf);
+		return QDF_STATUS_E_FAILURE;
+	}
+
+	return QDF_STATUS_SUCCESS;
+}
+
 /**
  * send_snr_request_cmd_tlv() - send request to fw to get RSSI stats
  * @wmi_handle: wmi handle
@@ -17254,6 +17299,7 @@ struct wmi_ops tlv_ops =  {
 	.send_process_ll_stats_set_cmd = send_process_ll_stats_set_cmd_tlv,
 	.send_process_ll_stats_get_cmd = send_process_ll_stats_get_cmd_tlv,
 	.send_get_stats_cmd = send_get_stats_cmd_tlv,
+	.send_congestion_cmd = send_congestion_cmd_tlv,
 	.send_snr_request_cmd = send_snr_request_cmd_tlv,
 	.send_snr_cmd = send_snr_cmd_tlv,
 	.send_link_status_req_cmd = send_link_status_req_cmd_tlv,