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From:   Ping-Ke Shih <pkshih@realtek.com>
To:     <kvalo@kernel.org>
CC:     <kevin_yang@realtek.com>, <linux-wireless@vger.kernel.org>
Subject: [PATCH v2 08/13] rtw89: concentrate chandef setting to stack callback
Date:   Thu, 23 Jun 2022 11:46:30 +0800
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From: Zong-Zhe Yang <kevin_yang@realtek.com>

Originally, we didn't support mac80211 chanctx, so it's expected that
ieee80211_hw::conf::chandef would be filled by mac80211. And then, we
could just query it whenever we need the current chandef.

However, we are planing to support mac80211 chanctx. After that, the
above assumption would be broken. So, we adjust a bit ahead to reduce
future works about mac80211 chanctx.

After this, we don't query ieee80211_hw::conf::chandef directly, and
we add a map, entity_map, to HAL to indicate which chandef came from
stack. And it will later be used to recalcate entity mode.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw89/chan.c     | 20 +++++++++++++++++++
 drivers/net/wireless/realtek/rtw89/chan.h     |  3 +++
 drivers/net/wireless/realtek/rtw89/core.c     | 14 +++++++------
 drivers/net/wireless/realtek/rtw89/core.h     | 12 +++++++++++
 drivers/net/wireless/realtek/rtw89/mac80211.c |  6 +++++-
 5 files changed, 48 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw89/chan.c b/drivers/net/wireless/realtek/rtw89/chan.c
index 0bf27a344d2b4..a9f0133f8089d 100644
--- a/drivers/net/wireless/realtek/rtw89/chan.c
+++ b/drivers/net/wireless/realtek/rtw89/chan.c
@@ -118,3 +118,23 @@ bool rtw89_assign_entity_chan(struct rtw89_dev *rtwdev,
 	*chan = *new;
 	return band_changed;
 }
+
+static void __rtw89_config_entity_chandef(struct rtw89_dev *rtwdev,
+					  enum rtw89_sub_entity_idx idx,
+					  const struct cfg80211_chan_def *chandef,
+					  bool from_stack)
+{
+	struct rtw89_hal *hal = &rtwdev->hal;
+
+	hal->chandef[idx] = *chandef;
+
+	if (from_stack)
+		set_bit(idx, hal->entity_map);
+}
+
+void rtw89_config_entity_chandef(struct rtw89_dev *rtwdev,
+				 enum rtw89_sub_entity_idx idx,
+				 const struct cfg80211_chan_def *chandef)
+{
+	__rtw89_config_entity_chandef(rtwdev, idx, chandef, true);
+}
diff --git a/drivers/net/wireless/realtek/rtw89/chan.h b/drivers/net/wireless/realtek/rtw89/chan.h
index d39311a3d5baf..b2022bb0afc6a 100644
--- a/drivers/net/wireless/realtek/rtw89/chan.h
+++ b/drivers/net/wireless/realtek/rtw89/chan.h
@@ -26,5 +26,8 @@ void rtw89_chan_create(struct rtw89_chan *chan, u8 center_chan, u8 primary_chan,
 bool rtw89_assign_entity_chan(struct rtw89_dev *rtwdev,
 			      enum rtw89_sub_entity_idx idx,
 			      const struct rtw89_chan *new);
+void rtw89_config_entity_chandef(struct rtw89_dev *rtwdev,
+				 enum rtw89_sub_entity_idx idx,
+				 const struct cfg80211_chan_def *chandef);
 
 #endif
diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c
index fb3943c6ee9e2..4c25fef476e01 100644
--- a/drivers/net/wireless/realtek/rtw89/core.c
+++ b/drivers/net/wireless/realtek/rtw89/core.c
@@ -225,7 +225,7 @@ static void rtw89_traffic_stats_accu(struct rtw89_dev *rtwdev,
 	}
 }
 
-static void rtw89_get_channel_params(struct cfg80211_chan_def *chandef,
+static void rtw89_get_channel_params(const struct cfg80211_chan_def *chandef,
 				     struct rtw89_chan *chan)
 {
 	struct ieee80211_channel *channel = chandef->chan;
@@ -302,7 +302,8 @@ void rtw89_core_set_chip_txpwr(struct rtw89_dev *rtwdev)
 
 void rtw89_set_channel(struct rtw89_dev *rtwdev)
 {
-	struct ieee80211_hw *hw = rtwdev->hw;
+	const struct cfg80211_chan_def *chandef =
+		rtw89_chandef_get(rtwdev, RTW89_SUB_ENTITY_0);
 	const struct rtw89_chip_info *chip = rtwdev->chip;
 	struct rtw89_chan chan;
 	struct rtw89_channel_help_params bak;
@@ -311,7 +312,7 @@ void rtw89_set_channel(struct rtw89_dev *rtwdev)
 
 	entity_active = rtw89_get_entity_state(rtwdev);
 
-	rtw89_get_channel_params(&hw->conf.chandef, &chan);
+	rtw89_get_channel_params(chandef, &chan);
 	if (WARN(chan.channel == 0, "Invalid channel\n"))
 		return;
 
@@ -1607,14 +1608,15 @@ static void rtw89_core_update_rx_status(struct rtw89_dev *rtwdev,
 					struct rtw89_rx_desc_info *desc_info,
 					struct ieee80211_rx_status *rx_status)
 {
-	struct ieee80211_hw *hw = rtwdev->hw;
+	const struct cfg80211_chan_def *chandef =
+		rtw89_chandef_get(rtwdev, RTW89_SUB_ENTITY_0);
 	const struct rtw89_chan *cur = rtw89_chan_get(rtwdev, RTW89_SUB_ENTITY_0);
 	u16 data_rate;
 	u8 data_rate_mode;
 
 	/* currently using single PHY */
-	rx_status->freq = hw->conf.chandef.chan->center_freq;
-	rx_status->band = hw->conf.chandef.chan->band;
+	rx_status->freq = chandef->chan->center_freq;
+	rx_status->band = chandef->chan->band;
 
 	if (rtwdev->scanning &&
 	    RTW89_CHK_FW_FEATURE(SCAN_OFFLOAD, &rtwdev->fw)) {
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index 7de9e228c6187..f8027b9a36a0c 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -2634,6 +2634,9 @@ struct rtw89_hal {
 	bool support_cckpd;
 	bool support_igi;
 
+	DECLARE_BITMAP(entity_map, NUM_OF_RTW89_SUB_ENTITY);
+	struct cfg80211_chan_def chandef[NUM_OF_RTW89_SUB_ENTITY];
+
 	bool entity_active;
 
 	struct rtw89_chan chan[NUM_OF_RTW89_SUB_ENTITY];
@@ -3629,6 +3632,15 @@ void rtw89_chip_set_channel_done(struct rtw89_dev *rtwdev,
 					    mac_idx, phy_idx);
 }
 
+static inline
+const struct cfg80211_chan_def *rtw89_chandef_get(struct rtw89_dev *rtwdev,
+						  enum rtw89_sub_entity_idx idx)
+{
+	struct rtw89_hal *hal = &rtwdev->hal;
+
+	return &hal->chandef[idx];
+}
+
 static inline
 const struct rtw89_chan *rtw89_chan_get(struct rtw89_dev *rtwdev,
 					enum rtw89_sub_entity_idx idx)
diff --git a/drivers/net/wireless/realtek/rtw89/mac80211.c b/drivers/net/wireless/realtek/rtw89/mac80211.c
index 95ff4bafe5424..2bfd570d7bd2e 100644
--- a/drivers/net/wireless/realtek/rtw89/mac80211.c
+++ b/drivers/net/wireless/realtek/rtw89/mac80211.c
@@ -3,6 +3,7 @@
  */
 
 #include "cam.h"
+#include "chan.h"
 #include "coex.h"
 #include "debug.h"
 #include "fw.h"
@@ -85,8 +86,11 @@ static int rtw89_ops_config(struct ieee80211_hw *hw, u32 changed)
 		}
 	}
 
-	if (changed & IEEE80211_CONF_CHANGE_CHANNEL)
+	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+		rtw89_config_entity_chandef(rtwdev, RTW89_SUB_ENTITY_0,
+					    &hw->conf.chandef);
 		rtw89_set_channel(rtwdev);
+	}
 
 	if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
 	    (hw->conf.flags & IEEE80211_CONF_IDLE))
-- 
2.25.1