From 4f6dd92305f74c43f09e2ff867011e0029ee0e0d Mon Sep 17 00:00:00 2001
From: Venkateswara Naralasetty <quic_vnaralas@quicinc.com>
Date: Wed, 9 Feb 2022 19:43:39 +0530
Subject: [PATCH] ath11k: fix radar detection in 160 Mhz
Git-commit: 4f6dd92305f74c43f09e2ff867011e0029ee0e0d
Patch-mainline: v5.18-rc1
References: bsc#1206451

Radar detection fails in the secondary 80 MHz when the
the AP's primary 80 MHz is in non-DFS region in 160 MHz.

This is due to WMI channel flag WMI_CHAN_INFO_DFS_FREQ2 is not set
properly in case of the primary 80 MHz is in non-DFS region.
HALPHY detects the radar pulses in the secondary 80 MHz only when
WMI_CHAN_INFO_DFS_FREQ2 is set.

Fix this issue by setting WMI channel flag WMI_CHAN_INFO_DFS_FREQ2
based on the radar_enabled flag from the channel context.

Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.5.0.1-01100-QCAHKSWPL_SILICONZ-1

Signed-off-by: Venkateswara Naralasetty <quic_vnaralas@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/1644416019-820-2-git-send-email-quic_vnaralas@quicinc.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/ath/ath11k/mac.c | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index d5922a0a35f9..68754e9914b3 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -6630,12 +6630,13 @@ static void ath11k_mac_op_remove_chanctx(struct ieee80211_hw *hw,
 
 static int
 ath11k_mac_vdev_start_restart(struct ath11k_vif *arvif,
-			      const struct cfg80211_chan_def *chandef,
+			      struct ieee80211_chanctx_conf *ctx,
 			      bool restart)
 {
 	struct ath11k *ar = arvif->ar;
 	struct ath11k_base *ab = ar->ab;
 	struct wmi_vdev_start_req_arg arg = {};
+	const struct cfg80211_chan_def *chandef = &ctx->def;
 	int he_support = arvif->vif->bss_conf.he_support;
 	int ret = 0;
 
@@ -6670,8 +6671,7 @@ ath11k_mac_vdev_start_restart(struct ath11k_vif *arvif,
 		arg.channel.chan_radar =
 			!!(chandef->chan->flags & IEEE80211_CHAN_RADAR);
 
-		arg.channel.freq2_radar =
-			!!(chandef->chan->flags & IEEE80211_CHAN_RADAR);
+		arg.channel.freq2_radar = ctx->radar_enabled;
 
 		arg.channel.passive = arg.channel.chan_radar;
 
@@ -6781,15 +6781,15 @@ static int ath11k_mac_vdev_stop(struct ath11k_vif *arvif)
 }
 
 static int ath11k_mac_vdev_start(struct ath11k_vif *arvif,
-				 const struct cfg80211_chan_def *chandef)
+				 struct ieee80211_chanctx_conf *ctx)
 {
-	return ath11k_mac_vdev_start_restart(arvif, chandef, false);
+	return ath11k_mac_vdev_start_restart(arvif, ctx, false);
 }
 
 static int ath11k_mac_vdev_restart(struct ath11k_vif *arvif,
-				   const struct cfg80211_chan_def *chandef)
+				   struct ieee80211_chanctx_conf *ctx)
 {
-	return ath11k_mac_vdev_start_restart(arvif, chandef, true);
+	return ath11k_mac_vdev_start_restart(arvif, ctx, true);
 }
 
 struct ath11k_mac_change_chanctx_arg {
@@ -6864,7 +6864,7 @@ ath11k_mac_update_vif_chan(struct ath11k *ar,
 		 * If vdev is down then it expect vdev_stop->vdev_start.
 		 */
 		if (arvif->is_up) {
-			ret = ath11k_mac_vdev_restart(arvif, &vifs[i].new_ctx->def);
+			ret = ath11k_mac_vdev_restart(arvif, vifs[i].new_ctx);
 			if (ret) {
 				ath11k_warn(ab, "failed to restart vdev %d: %d\n",
 					    arvif->vdev_id, ret);
@@ -6878,7 +6878,7 @@ ath11k_mac_update_vif_chan(struct ath11k *ar,
 				continue;
 			}
 
-			ret = ath11k_mac_vdev_start(arvif, &vifs[i].new_ctx->def);
+			ret = ath11k_mac_vdev_start(arvif, vifs[i].new_ctx);
 			if (ret)
 				ath11k_warn(ab, "failed to start vdev %d: %d\n",
 					    arvif->vdev_id, ret);
@@ -6967,7 +6967,8 @@ static void ath11k_mac_op_change_chanctx(struct ieee80211_hw *hw,
 	if (WARN_ON(changed & IEEE80211_CHANCTX_CHANGE_CHANNEL))
 		goto unlock;
 
-	if (changed & IEEE80211_CHANCTX_CHANGE_WIDTH)
+	if (changed & IEEE80211_CHANCTX_CHANGE_WIDTH ||
+	    changed & IEEE80211_CHANCTX_CHANGE_RADAR)
 		ath11k_mac_update_active_vif_chan(ar, ctx);
 
 	/* TODO: Recalc radar detection */
@@ -6987,7 +6988,7 @@ static int ath11k_start_vdev_delay(struct ieee80211_hw *hw,
 	if (WARN_ON(arvif->is_started))
 		return -EBUSY;
 
-	ret = ath11k_mac_vdev_start(arvif, &arvif->chanctx.def);
+	ret = ath11k_mac_vdev_start(arvif, &arvif->chanctx);
 	if (ret) {
 		ath11k_warn(ab, "failed to start vdev %i addr %pM on freq %d: %d\n",
 			    arvif->vdev_id, vif->addr,
@@ -7081,7 +7082,7 @@ ath11k_mac_op_assign_vif_chanctx(struct ieee80211_hw *hw,
 		goto out;
 	}
 
-	ret = ath11k_mac_vdev_start(arvif, &ctx->def);
+	ret = ath11k_mac_vdev_start(arvif, ctx);
 	if (ret) {
 		ath11k_warn(ab, "failed to start vdev %i addr %pM on freq %d: %d\n",
 			    arvif->vdev_id, vif->addr,
-- 
2.35.3