qcacmn: Add WMI support for AWGN interference detection

Add APIs to extract AWGN information from the DCS WMI
interference event received from FW.

Change-Id: I4b2f9f4ef012553dac2a405dc7ac12aef9452354
CRs-Fixed: 2958675

umac/dcs/dispatcher/inc/wlan_dcs_public_structs.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2020-2021, 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 above
@@ -101,4 +101,22 @@ struct wlan_host_dcs_im_user_stats {
 	uint32_t my_bss_rx_cycle_count;
 };
 
+/**
+ * struct wlan_host_dcs_awgn_info - DCS AWGN info
+ * @channel_width: Channel width, enum phy_ch_width
+ * @center_freq: Center frequency of primary channel
+ * @center_freq0: Center frequency of segment 1
+ * @center_freq1: Center frequency of segment 2
+ * @chan_bw_intf_bitmap: Per-20MHz interference bitmap, each bit
+ *  indicates 20MHz in which interference is seen, e.g.
+ *  bit0 - primary 20MHz, bit1 - secondary 20MHz,
+ *  bit2 - secondary 40MHz Lower, bit3 - secondary 40MHz Upper
+ */
+struct wlan_host_dcs_awgn_info {
+	enum phy_ch_width channel_width;
+	qdf_freq_t center_freq;
+	qdf_freq_t center_freq0;
+	qdf_freq_t center_freq1;
+	uint32_t chan_bw_intf_bitmap;
+};
 #endif

wmi/inc/wmi_unified_dcs_api.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2020-2021, 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 above
@@ -57,6 +57,18 @@ QDF_STATUS wmi_extract_dcs_im_tgt_stats(
 	void *evt_buf,
 	struct wlan_host_dcs_im_tgt_stats *wlan_stat);
 
+/*
+ * wmi_extract_dcs_awgn_info() - extract DCS AWGN interference info from event
+ * @wmi_handle: WMI handle
+ * @evt_buf: Pointer to event buffer
+ * @awgn_info: Pointer to hold AWGN interference info
+ *
+ * Return: QDF_STATUS_SUCCESS on success and QDF_STATUS_E_FAILURE for failure
+ */
+QDF_STATUS
+wmi_extract_dcs_awgn_info(wmi_unified_t wmi_hdl, void *evt_buf,
+			  struct wlan_host_dcs_awgn_info *awgn_info);
+
 /**
  * wmi_send_dcs_pdev_param() - send dcs pdev param
  * @wmi_handle: wmi handle

wmi/inc/wmi_unified_priv.h

@@ -1642,6 +1642,9 @@ QDF_STATUS (*extract_dcs_im_tgt_stats)(
 		wmi_unified_t wmi_handle,
 		void *evt_buf,
 		struct wlan_host_dcs_im_tgt_stats *wlan_stat);
+
+QDF_STATUS (*extract_dcs_awgn_info)(wmi_unified_t wmi_handle, void *evt_buf,
+				    struct wlan_host_dcs_awgn_info *awgn_info);
 #else
 QDF_STATUS (*extract_dcs_interference_type)(wmi_unified_t wmi_handle,
 	void *evt_buf, struct wmi_host_dcs_interference_param *param);

wmi/src/wmi_unified_dcs_api.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2020-2021, 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 above
@@ -49,6 +49,16 @@ QDF_STATUS wmi_extract_dcs_im_tgt_stats(
 	return QDF_STATUS_E_FAILURE;
 }
 
+QDF_STATUS wmi_extract_dcs_awgn_info(wmi_unified_t wmi_hdl, void *evt_buf,
+				     struct wlan_host_dcs_awgn_info *awgn_info)
+{
+	if (wmi_hdl && wmi_hdl->ops->extract_dcs_awgn_info)
+		return wmi_hdl->ops->extract_dcs_awgn_info(wmi_hdl, evt_buf,
+							   awgn_info);
+
+	return QDF_STATUS_E_FAILURE;
+}
+
 #ifdef ENABLE_HOST_TO_TARGET_CONVERSION
 QDF_STATUS wmi_send_dcs_pdev_param(wmi_unified_t wmi_handle,
 				   uint32_t pdev_idx,

wmi/src/wmi_unified_dcs_tlv.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2020-2021, 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 above
@@ -100,11 +100,86 @@ static QDF_STATUS extract_dcs_im_tgt_stats_tlv(
 	return QDF_STATUS_SUCCESS;
 }
 
+#ifdef WLAN_FEATURE_11BE
+#define WLAN_PHY_CH_WIDTH_320MHZ CH_WIDTH_320MHZ
+#else
+#define WLAN_PHY_CH_WIDTH_320MHZ CH_WIDTH_INVALID
+#endif
+
+/*
+ * wmi_map_ch_width() - map wmi channel width to host channel width
+ * @wmi_width: wmi channel width enum
+ *
+ * Return: host channel width, enum phy_ch_width
+ */
+static inline enum phy_ch_width wmi_map_ch_width(wmi_channel_width wmi_width)
+{
+	switch (wmi_width) {
+	case WMI_CHAN_WIDTH_20:
+		return CH_WIDTH_20MHZ;
+	case WMI_CHAN_WIDTH_40:
+		return CH_WIDTH_40MHZ;
+	case WMI_CHAN_WIDTH_80:
+		return CH_WIDTH_80MHZ;
+	case WMI_CHAN_WIDTH_160:
+		return CH_WIDTH_160MHZ;
+	case WMI_CHAN_WIDTH_80P80:
+		return CH_WIDTH_80P80MHZ;
+	case WMI_CHAN_WIDTH_5:
+		return CH_WIDTH_5MHZ;
+	case WMI_CHAN_WIDTH_10:
+		return CH_WIDTH_10MHZ;
+	case WMI_CHAN_WIDTH_320:
+		return WLAN_PHY_CH_WIDTH_320MHZ;
+	default:
+		return CH_WIDTH_INVALID;
+	}
+}
+
+/*
+ * extract_dcs_awgn_info_tlv() - extract DCS AWGN interference from event
+ * @wmi_handle: wmi handle
+ * @param evt_buf: pointer to event buffer
+ * @param awgn_info: Pointer to hold cw interference
+ *
+ * Return: QDF_STATUS_SUCCESS for success or QDF_STATUS_E_* for error
+ */
+static QDF_STATUS
+extract_dcs_awgn_info_tlv(wmi_unified_t wmi_handle, void *evt_buf,
+			  struct wlan_host_dcs_awgn_info *awgn_info)
+{
+	WMI_DCS_INTERFERENCE_EVENTID_param_tlvs *param_buf;
+	wmi_dcs_awgn_int_t *ev;
+
+	param_buf = evt_buf;
+	if (!param_buf)
+		return QDF_STATUS_E_INVAL;
+
+	ev = param_buf->awgn_int;
+	if (!ev) {
+		wmi_err("Invalid awgn info");
+		return QDF_STATUS_E_INVAL;
+	}
+
+	awgn_info->channel_width = wmi_map_ch_width(ev->channel_width);
+	awgn_info->center_freq = (qdf_freq_t)ev->chan_freq;
+	awgn_info->center_freq0 = (qdf_freq_t)ev->center_freq0;
+	awgn_info->center_freq1 = (qdf_freq_t)ev->center_freq1;
+	awgn_info->chan_bw_intf_bitmap = ev->chan_bw_interference_bitmap;
+	wmi_debug("width: %u, freq: %u, freq0: %u, freq1: %u, bitmap: 0x%x",
+		  awgn_info->channel_width, awgn_info->center_freq,
+		  awgn_info->center_freq0, awgn_info->center_freq1,
+		  awgn_info->chan_bw_intf_bitmap);
+
+	return QDF_STATUS_SUCCESS;
+}
+
 void wmi_dcs_attach_tlv(wmi_unified_t wmi_handle)
 {
 	struct wmi_ops *ops = wmi_handle->ops;
 
 	ops->extract_dcs_interference_type = extract_dcs_interference_type_tlv;
 	ops->extract_dcs_im_tgt_stats = extract_dcs_im_tgt_stats_tlv;
+	ops->extract_dcs_awgn_info = extract_dcs_awgn_info_tlv;
 }