[PATCH v2 0/2] wifi: ath12k: Introduce hw abstraction

[PATCH v2 0/2] wifi: ath12k: Introduce hw abstraction

[Karthikeyan Periyasamy]

To support multi link operation (MLO), need to move from the multi wiphy
model to a single wiphy model. However, the single wiphy model allows
multiple link/radio to be exposed by the same mac80211 hw. So introduce
a new container (ath12k_hw) structure. This approach improves scalability
for future multi link operation support.

v2:
 - Rebased on pending branch as per jeff comments

Note: Raised on top of pending branch

Karthikeyan Periyasamy (2):
  wifi: ath12k: Refactor the mac80211 hw access from link/radio
  wifi: ath12k: Introduce the container for mac80211 hw

 drivers/net/wireless/ath/ath12k/core.c   | 108 +++--
 drivers/net/wireless/ath/ath12k/core.h   |  47 ++-
 drivers/net/wireless/ath/ath12k/dp_mon.c |   4 +-
 drivers/net/wireless/ath/ath12k/dp_rx.c  |   6 +-
 drivers/net/wireless/ath/ath12k/dp_tx.c  |   6 +-
 drivers/net/wireless/ath/ath12k/mac.c    | 480 +++++++++++++++++------
 drivers/net/wireless/ath/ath12k/mac.h    |  14 +-
 drivers/net/wireless/ath/ath12k/reg.c    |   9 +-
 drivers/net/wireless/ath/ath12k/wmi.c    |  17 +-
 9 files changed, 510 insertions(+), 181 deletions(-)


base-commit: a34e613ed3e02337577b26e308067fb6c4700586
-- 
2.34.1

[PATCH v2 1/2] wifi: ath12k: Refactor the mac80211 hw access from link/radio

[Karthikeyan Periyasamy]

Currently, mac80211 hardware accesses link/radio structure directly in
multiple locations. Introduce helper function to avoid this direct
access, as this change will facilitate refactoring for Multi-link
operation support.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/core.c   | 10 +++--
 drivers/net/wireless/ath/ath12k/core.h   |  6 ++-
 drivers/net/wireless/ath/ath12k/dp_mon.c |  4 +-
 drivers/net/wireless/ath/ath12k/dp_rx.c  |  6 +--
 drivers/net/wireless/ath/ath12k/dp_tx.c  |  6 +--
 drivers/net/wireless/ath/ath12k/mac.c    | 51 ++++++++++++++----------
 drivers/net/wireless/ath/ath12k/reg.c    |  6 +--
 drivers/net/wireless/ath/ath12k/wmi.c    | 17 ++++----
 8 files changed, 61 insertions(+), 45 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index 7611ad2db057..4870c7672e9d 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/module.h>
@@ -951,6 +951,7 @@ static void ath12k_rfkill_work(struct work_struct *work)
 {
 	struct ath12k_base *ab = container_of(work, struct ath12k_base, rfkill_work);
 	struct ath12k *ar;
+	struct ieee80211_hw *hw;
 	bool rfkill_radio_on;
 	int i;
 
@@ -963,8 +964,9 @@ static void ath12k_rfkill_work(struct work_struct *work)
 		if (!ar)
 			continue;
 
+		hw = ath12k_ar_to_hw(ar);
 		ath12k_mac_rfkill_enable_radio(ar, rfkill_radio_on);
-		wiphy_rfkill_set_hw_state(ar->hw->wiphy, !rfkill_radio_on);
+		wiphy_rfkill_set_hw_state(hw->wiphy, !rfkill_radio_on);
 	}
 }
 
@@ -1008,7 +1010,7 @@ static void ath12k_core_pre_reconfigure_recovery(struct ath12k_base *ab)
 		if (!ar || ar->state == ATH12K_STATE_OFF)
 			continue;
 
-		ieee80211_stop_queues(ar->hw);
+		ieee80211_stop_queues(ath12k_ar_to_hw(ar));
 		ath12k_mac_drain_tx(ar);
 		complete(&ar->scan.started);
 		complete(&ar->scan.completed);
@@ -1048,7 +1050,7 @@ static void ath12k_core_post_reconfigure_recovery(struct ath12k_base *ab)
 		case ATH12K_STATE_ON:
 			ar->state = ATH12K_STATE_RESTARTING;
 			ath12k_core_halt(ar);
-			ieee80211_restart_hw(ar->hw);
+			ieee80211_restart_hw(ath12k_ar_to_hw(ar));
 			break;
 		case ATH12K_STATE_OFF:
 			ath12k_warn(ab,
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index d3f912704c8b..96295b0260e0 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: BSD-3-Clause-Clear */
 /*
  * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #ifndef ATH12K_CORE_H
@@ -897,4 +897,8 @@ static inline const char *ath12k_bus_str(enum ath12k_bus bus)
 	return "unknown";
 }
 
+static inline struct ieee80211_hw *ath12k_ar_to_hw(struct ath12k *ar)
+{
+	return ar->hw;
+}
 #endif /* _CORE_H_ */
diff --git a/drivers/net/wireless/ath/ath12k/dp_mon.c b/drivers/net/wireless/ath/ath12k/dp_mon.c
index f5be951a165e..dc40d9aa0847 100644
--- a/drivers/net/wireless/ath/ath12k/dp_mon.c
+++ b/drivers/net/wireless/ath/ath12k/dp_mon.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include "dp_mon.h"
@@ -1130,7 +1130,7 @@ static void ath12k_dp_mon_rx_deliver_msdu(struct ath12k *ar, struct napi_struct
 	    !(is_mcbc && rx_status->flag & RX_FLAG_DECRYPTED))
 		rx_status->flag |= RX_FLAG_8023;
 
-	ieee80211_rx_napi(ar->hw, pubsta, msdu, napi);
+	ieee80211_rx_napi(ath12k_ar_to_hw(ar), pubsta, msdu, napi);
 }
 
 static int ath12k_dp_mon_rx_deliver(struct ath12k *ar, u32 mac_id,
diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c
index 60e10a4893cc..f2778f2513b3 100644
--- a/drivers/net/wireless/ath/ath12k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath12k/dp_rx.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/ieee80211.h>
@@ -2458,7 +2458,7 @@ static void ath12k_dp_rx_deliver_msdu(struct ath12k *ar, struct napi_struct *nap
 	    !(is_mcbc && rx_status->flag & RX_FLAG_DECRYPTED))
 		rx_status->flag |= RX_FLAG_8023;
 
-	ieee80211_rx_napi(ar->hw, pubsta, msdu, napi);
+	ieee80211_rx_napi(ath12k_ar_to_hw(ar), pubsta, msdu, napi);
 }
 
 static int ath12k_dp_rx_process_msdu(struct ath12k *ar,
@@ -2844,7 +2844,7 @@ static int ath12k_dp_rx_h_verify_tkip_mic(struct ath12k *ar, struct ath12k_peer
 	ath12k_dp_rx_h_ppdu(ar, rx_desc, rxs);
 	ath12k_dp_rx_h_undecap(ar, msdu, rx_desc,
 			       HAL_ENCRYPT_TYPE_TKIP_MIC, rxs, true);
-	ieee80211_rx(ar->hw, msdu);
+	ieee80211_rx(ath12k_ar_to_hw(ar), msdu);
 	return -EINVAL;
 }
 
diff --git a/drivers/net/wireless/ath/ath12k/dp_tx.c b/drivers/net/wireless/ath/ath12k/dp_tx.c
index 6313851b1a40..0cd2b30c7e5f 100644
--- a/drivers/net/wireless/ath/ath12k/dp_tx.c
+++ b/drivers/net/wireless/ath/ath12k/dp_tx.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include "core.h"
@@ -403,7 +403,7 @@ ath12k_dp_tx_htt_tx_complete_buf(struct ath12k_base *ab,
 		}
 	}
 
-	ieee80211_tx_status_skb(ar->hw, msdu);
+	ieee80211_tx_status_skb(ath12k_ar_to_hw(ar), msdu);
 }
 
 static void
@@ -602,7 +602,7 @@ static void ath12k_dp_tx_complete_msdu(struct ath12k *ar,
 
 	ath12k_dp_tx_update(ar, ts);
 
-	ieee80211_tx_status_skb(ar->hw, msdu);
+	ieee80211_tx_status_skb(ath12k_ar_to_hw(ar), msdu);
 
 exit:
 	rcu_read_unlock();
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index eb5a7a806366..293440193374 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -542,7 +542,7 @@ struct ath12k_vif *ath12k_mac_get_arvif(struct ath12k *ar, u32 vdev_id)
 	arvif_iter.vdev_id = vdev_id;
 
 	flags = IEEE80211_IFACE_ITER_RESUME_ALL;
-	ieee80211_iterate_active_interfaces_atomic(ar->hw,
+	ieee80211_iterate_active_interfaces_atomic(ath12k_ar_to_hw(ar),
 						   flags,
 						   ath12k_get_arvif_iter,
 						   &arvif_iter);
@@ -1040,7 +1040,7 @@ static int ath12k_mac_monitor_start(struct ath12k *ar)
 	if (ar->monitor_started)
 		return 0;
 
-	ieee80211_iter_chan_contexts_atomic(ar->hw,
+	ieee80211_iter_chan_contexts_atomic(ath12k_ar_to_hw(ar),
 					    ath12k_mac_get_any_chandef_iter,
 					    &chandef);
 	if (!chandef)
@@ -1085,7 +1085,7 @@ static int ath12k_mac_monitor_stop(struct ath12k *ar)
 
 static int ath12k_mac_config(struct ath12k *ar, u32 changed)
 {
-	struct ieee80211_hw *hw = ar->hw;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	struct ieee80211_conf *conf = &hw->conf;
 	int ret = 0;
 
@@ -1139,7 +1139,7 @@ static int ath12k_mac_setup_bcn_tmpl(struct ath12k_vif *arvif)
 {
 	struct ath12k *ar = arvif->ar;
 	struct ath12k_base *ab = ar->ab;
-	struct ieee80211_hw *hw = ar->hw;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	struct ieee80211_vif *vif = arvif->vif;
 	struct ieee80211_mutable_offsets offs = {};
 	struct sk_buff *bcn;
@@ -1227,6 +1227,7 @@ static void ath12k_peer_assoc_h_basic(struct ath12k *ar,
 				      struct ath12k_wmi_peer_assoc_arg *arg)
 {
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	u32 aid;
 
 	lockdep_assert_held(&ar->conf_mutex);
@@ -1241,7 +1242,7 @@ static void ath12k_peer_assoc_h_basic(struct ath12k *ar,
 	arg->peer_associd = aid;
 	arg->auth_flag = true;
 	/* TODO: STA WAR in ath10k for listen interval required? */
-	arg->peer_listen_intval = ar->hw->conf.listen_interval;
+	arg->peer_listen_intval = hw->conf.listen_interval;
 	arg->peer_nss = 1;
 	arg->peer_caps = vif->bss_conf.assoc_capability;
 }
@@ -1255,6 +1256,7 @@ static void ath12k_peer_assoc_h_crypto(struct ath12k *ar,
 	struct cfg80211_chan_def def;
 	struct cfg80211_bss *bss;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	const u8 *rsnie = NULL;
 	const u8 *wpaie = NULL;
 
@@ -1263,7 +1265,7 @@ static void ath12k_peer_assoc_h_crypto(struct ath12k *ar,
 	if (WARN_ON(ath12k_mac_vif_chan(vif, &def)))
 		return;
 
-	bss = cfg80211_get_bss(ar->hw->wiphy, def.chan, info->bssid, NULL, 0,
+	bss = cfg80211_get_bss(hw->wiphy, def.chan, info->bssid, NULL, 0,
 			       IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
 
 	if (arvif->rsnie_present || arvif->wpaie_present) {
@@ -1283,7 +1285,7 @@ static void ath12k_peer_assoc_h_crypto(struct ath12k *ar,
 						ies->data,
 						ies->len);
 		rcu_read_unlock();
-		cfg80211_put_bss(ar->hw->wiphy, bss);
+		cfg80211_put_bss(hw->wiphy, bss);
 	}
 
 	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
@@ -1317,6 +1319,7 @@ static void ath12k_peer_assoc_h_rates(struct ath12k *ar,
 	struct cfg80211_chan_def def;
 	const struct ieee80211_supported_band *sband;
 	const struct ieee80211_rate *rates;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	enum nl80211_band band;
 	u32 ratemask;
 	u8 rate;
@@ -1328,7 +1331,7 @@ static void ath12k_peer_assoc_h_rates(struct ath12k *ar,
 		return;
 
 	band = def.chan->band;
-	sband = ar->hw->wiphy->bands[band];
+	sband = hw->wiphy->bands[band];
 	ratemask = sta->deflink.supp_rates[band];
 	ratemask &= arvif->bitrate_mask.control[band].legacy;
 	rates = sband->bitrates;
@@ -2428,6 +2431,7 @@ static void ath12k_recalculate_mgmt_rate(struct ath12k *ar,
 					 struct cfg80211_chan_def *def)
 {
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	const struct ieee80211_supported_band *sband;
 	u8 basic_rate_idx;
 	int hw_rate_code;
@@ -2437,7 +2441,7 @@ static void ath12k_recalculate_mgmt_rate(struct ath12k *ar,
 
 	lockdep_assert_held(&ar->conf_mutex);
 
-	sband = ar->hw->wiphy->bands[def->chan->band];
+	sband = hw->wiphy->bands[def->chan->band];
 	basic_rate_idx = ffs(vif->bss_conf.basic_rates) - 1;
 	bitrate = sband->bitrates[basic_rate_idx].bitrate;
 
@@ -2464,6 +2468,7 @@ static int ath12k_mac_fils_discovery(struct ath12k_vif *arvif,
 				     struct ieee80211_bss_conf *info)
 {
 	struct ath12k *ar = arvif->ar;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	struct sk_buff *tmpl;
 	int ret;
 	u32 interval;
@@ -2472,7 +2477,7 @@ static int ath12k_mac_fils_discovery(struct ath12k_vif *arvif,
 	if (info->fils_discovery.max_interval) {
 		interval = info->fils_discovery.max_interval;
 
-		tmpl = ieee80211_get_fils_discovery_tmpl(ar->hw, arvif->vif);
+		tmpl = ieee80211_get_fils_discovery_tmpl(hw, arvif->vif);
 		if (tmpl)
 			ret = ath12k_wmi_fils_discovery_tmpl(ar, arvif->vdev_id,
 							     tmpl);
@@ -2480,7 +2485,7 @@ static int ath12k_mac_fils_discovery(struct ath12k_vif *arvif,
 		unsol_bcast_probe_resp_enabled = 1;
 		interval = info->unsol_bcast_probe_resp_interval;
 
-		tmpl = ieee80211_get_unsol_bcast_probe_resp_tmpl(ar->hw,
+		tmpl = ieee80211_get_unsol_bcast_probe_resp_tmpl(hw,
 								 arvif->vif);
 		if (tmpl)
 			ret = ath12k_wmi_probe_resp_tmpl(ar, arvif->vdev_id,
@@ -2803,6 +2808,8 @@ static void ath12k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
 
 void __ath12k_mac_scan_finish(struct ath12k *ar)
 {
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
+
 	lockdep_assert_held(&ar->data_lock);
 
 	switch (ar->scan.state) {
@@ -2811,7 +2818,7 @@ void __ath12k_mac_scan_finish(struct ath12k *ar)
 	case ATH12K_SCAN_RUNNING:
 	case ATH12K_SCAN_ABORTING:
 		if (ar->scan.is_roc && ar->scan.roc_notify)
-			ieee80211_remain_on_channel_expired(ar->hw);
+			ieee80211_remain_on_channel_expired(hw);
 		fallthrough;
 	case ATH12K_SCAN_STARTING:
 		if (!ar->scan.is_roc) {
@@ -2822,7 +2829,7 @@ void __ath12k_mac_scan_finish(struct ath12k *ar)
 					    ATH12K_SCAN_STARTING)),
 			};
 
-			ieee80211_scan_completed(ar->hw, &info);
+			ieee80211_scan_completed(hw, &info);
 		}
 
 		ar->scan.state = ATH12K_SCAN_IDLE;
@@ -3041,7 +3048,7 @@ static int ath12k_mac_op_hw_scan(struct ieee80211_hw *hw,
 	}
 
 	/* Add a margin to account for event/command processing */
-	ieee80211_queue_delayed_work(ar->hw, &ar->scan.timeout,
+	ieee80211_queue_delayed_work(ath12k_ar_to_hw(ar), &ar->scan.timeout,
 				     msecs_to_jiffies(arg.max_scan_time +
 						      ATH12K_MAC_SCAN_TIMEOUT_MSECS));
 
@@ -4824,7 +4831,7 @@ static void ath12k_mgmt_over_wmi_tx_drop(struct ath12k *ar, struct sk_buff *skb)
 {
 	int num_mgmt;
 
-	ieee80211_free_txskb(ar->hw, skb);
+	ieee80211_free_txskb(ath12k_ar_to_hw(ar), skb);
 
 	num_mgmt = atomic_dec_if_positive(&ar->num_pending_mgmt_tx);
 
@@ -5001,7 +5008,7 @@ static int ath12k_mac_mgmt_tx(struct ath12k *ar, struct sk_buff *skb,
 
 	skb_queue_tail(q, skb);
 	atomic_inc(&ar->num_pending_mgmt_tx);
-	ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
+	ieee80211_queue_work(ath12k_ar_to_hw(ar), &ar->wmi_mgmt_tx_work);
 
 	return 0;
 }
@@ -6362,7 +6369,7 @@ ath12k_mac_update_active_vif_chan(struct ath12k *ar,
 				  struct ieee80211_chanctx_conf *ctx)
 {
 	struct ath12k_mac_change_chanctx_arg arg = { .ctx = ctx };
-	struct ieee80211_hw *hw = ar->hw;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 
 	lockdep_assert_held(&ar->conf_mutex);
 
@@ -6879,7 +6886,7 @@ static void ath12k_mac_set_bitrate_mask_iter(void *data,
 	arsta->changed |= IEEE80211_RC_SUPP_RATES_CHANGED;
 	spin_unlock_bh(&ar->data_lock);
 
-	ieee80211_queue_work(ar->hw, &arsta->update_wk);
+	ieee80211_queue_work(ath12k_ar_to_hw(ar), &arsta->update_wk);
 }
 
 static void ath12k_mac_disable_peer_fixed_rate(void *data,
@@ -7355,7 +7362,7 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
 static int ath12k_mac_setup_iface_combinations(struct ath12k *ar)
 {
 	struct ath12k_base *ab = ar->ab;
-	struct ieee80211_hw *hw = ar->hw;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	struct wiphy *wiphy = hw->wiphy;
 	struct ieee80211_iface_combination *combinations;
 	struct ieee80211_iface_limit *limits;
@@ -7462,7 +7469,7 @@ static void ath12k_mac_cleanup_unregister(struct ath12k *ar)
 
 void ath12k_mac_hw_unregister(struct ath12k *ar)
 {
-	struct ieee80211_hw *hw = ar->hw;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	struct wiphy *wiphy = hw->wiphy;
 
 	cancel_work_sync(&ar->regd_update_work);
@@ -7508,7 +7515,7 @@ static int ath12k_mac_setup_register(struct ath12k *ar,
 int ath12k_mac_hw_register(struct ath12k *ar)
 {
 	struct ath12k_base *ab = ar->ab;
-	struct ieee80211_hw *hw = ar->hw;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	struct wiphy *wiphy = hw->wiphy;
 	struct ath12k_pdev *pdev = ar->pdev;
 	struct ath12k_pdev_cap *cap = &pdev->cap;
@@ -7766,7 +7773,7 @@ void ath12k_mac_hw_destroy(struct ath12k_base *ab)
 		if (!ar)
 			continue;
 
-		ieee80211_free_hw(ar->hw);
+		ieee80211_free_hw(ath12k_ar_to_hw(ar));
 		pdev->ar = NULL;
 	}
 }
diff --git a/drivers/net/wireless/ath/ath12k/reg.c b/drivers/net/wireless/ath/ath12k/reg.c
index f924bc13ccff..88e71d171355 100644
--- a/drivers/net/wireless/ath/ath12k/reg.c
+++ b/drivers/net/wireless/ath/ath12k/reg.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 #include <linux/rtnetlink.h>
 #include "core.h"
@@ -95,7 +95,7 @@ int ath12k_reg_update_chan_list(struct ath12k *ar)
 	struct ieee80211_supported_band **bands;
 	struct ath12k_wmi_scan_chan_list_arg *arg;
 	struct ieee80211_channel *channel;
-	struct ieee80211_hw *hw = ar->hw;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	struct ath12k_wmi_channel_arg *ch;
 	enum nl80211_band band;
 	int num_channels = 0;
@@ -199,7 +199,7 @@ static void ath12k_copy_regd(struct ieee80211_regdomain *regd_orig,
 
 int ath12k_regd_update(struct ath12k *ar, bool init)
 {
-	struct ieee80211_hw *hw = ar->hw;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	struct ieee80211_regdomain *regd, *regd_copy = NULL;
 	int ret, regd_len, pdev_id;
 	struct ath12k_base *ab;
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 553d2566b3f7..4d41c335ef34 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 #include <linux/skbuff.h>
 #include <linux/ctype.h>
@@ -4948,7 +4948,7 @@ static int wmi_process_mgmt_tx_comp(struct ath12k *ar, u32 desc_id,
 	if ((!(info->flags & IEEE80211_TX_CTL_NO_ACK)) && !status)
 		info->flags |= IEEE80211_TX_STAT_ACK;
 
-	ieee80211_tx_status_irqsafe(ar->hw, msdu);
+	ieee80211_tx_status_irqsafe(ath12k_ar_to_hw(ar), msdu);
 
 	num_mgmt = atomic_dec_if_positive(&ar->num_pending_mgmt_tx);
 
@@ -5076,6 +5076,8 @@ static void ath12k_wmi_event_scan_bss_chan(struct ath12k *ar)
 
 static void ath12k_wmi_event_scan_foreign_chan(struct ath12k *ar, u32 freq)
 {
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
+
 	lockdep_assert_held(&ar->data_lock);
 
 	switch (ar->scan.state) {
@@ -5087,7 +5089,7 @@ static void ath12k_wmi_event_scan_foreign_chan(struct ath12k *ar, u32 freq)
 		break;
 	case ATH12K_SCAN_RUNNING:
 	case ATH12K_SCAN_ABORTING:
-		ar->scan_channel = ieee80211_get_channel(ar->hw->wiphy, freq);
+		ar->scan_channel = ieee80211_get_channel(hw->wiphy, freq);
 		break;
 	}
 }
@@ -5226,13 +5228,14 @@ static int ath12k_pull_roam_ev(struct ath12k_base *ab, struct sk_buff *skb,
 static int freq_to_idx(struct ath12k *ar, int freq)
 {
 	struct ieee80211_supported_band *sband;
+	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
 	int band, ch, idx = 0;
 
 	for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
 		if (!ar->mac.sbands[band].channels)
 			continue;
 
-		sband = ar->hw->wiphy->bands[band];
+		sband = hw->wiphy->bands[band];
 		if (!sband)
 			continue;
 
@@ -5863,7 +5866,7 @@ static void ath12k_mgmt_rx_event(struct ath12k_base *ab, struct sk_buff *skb)
 		   status->freq, status->band, status->signal,
 		   status->rate_idx);
 
-	ieee80211_rx_ni(ar->hw, skb);
+	ieee80211_rx_ni(ath12k_ar_to_hw(ar), skb);
 
 exit:
 	rcu_read_unlock();
@@ -6036,7 +6039,7 @@ static void ath12k_peer_sta_kickout_event(struct ath12k_base *ab, struct sk_buff
 		goto exit;
 	}
 
-	sta = ieee80211_find_sta_by_ifaddr(ar->hw,
+	sta = ieee80211_find_sta_by_ifaddr(ath12k_ar_to_hw(ar),
 					   arg.mac_addr, NULL);
 	if (!sta) {
 		ath12k_warn(ab, "Spurious quick kickout for STA %pM\n",
@@ -6530,7 +6533,7 @@ ath12k_wmi_pdev_dfs_radar_detected_event(struct ath12k_base *ab, struct sk_buff
 	if (ar->dfs_block_radar_events)
 		ath12k_info(ab, "DFS Radar detected, but ignored as requested\n");
 	else
-		ieee80211_radar_detected(ar->hw);
+		ieee80211_radar_detected(ath12k_ar_to_hw(ar));
 
 exit:
 	rcu_read_unlock();
-- 
2.34.1

[PATCH v2 2/2] wifi: ath12k: Introduce the container for mac80211 hw

[Karthikeyan Periyasamy]

To support multi link operation, we need to combine all the link/pdev
under a single wiphy. This avoids the overhead of synchronization
across multiple hardware instances in both the cfg80211 and mac80211
layers. Currently, each link/pdev is registered as separate wiphy,
tightly coupled with link/pdev/radio (ar) structure. To enable single
wiphy registration within the chip, we decouple the wiphy data entity from
the link/pdev/radio (ar) structure and move it under the chip (ab)
structure with a new data container (ath12k_hw) structure. This approach
improves scalability for future multi link operation support.

		mac80211 hw private data structure diagram
		------------------------------------------

	Now						After

 +---------------------+                          +---------------------+
 |mac80211 hw priv data|                          |mac80211 hw priv data|
 |                     |                          |                     |
 |                     |                          |                     |
 |                     |                          |                     |
 |                     |                          |   ath12k_hw (ah)    |
 |                     |                          |                     |
 |                     |  +------------------->   |                     |
 |    ath12k (ar)      |                          |   +-------------+   |
 |                     |                          |   |             |   |
 |                     |                          |   | ath12k (ar) |   |
 |                     |                          |   |             |   |
 |                     |                          |   |             |   |
 |                     |                          |   +-------------+   |
 |                     |                          |                     |
 |                     |                          |                     |
 +---------------------+                          +---------------------+

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/core.c | 100 ++++--
 drivers/net/wireless/ath/ath12k/core.h |  43 ++-
 drivers/net/wireless/ath/ath12k/mac.c  | 437 ++++++++++++++++++-------
 drivers/net/wireless/ath/ath12k/mac.h  |  14 +-
 drivers/net/wireless/ath/ath12k/reg.c  |   3 +-
 5 files changed, 455 insertions(+), 142 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index 4870c7672e9d..a85109b4e7a8 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -622,8 +622,7 @@ static void ath12k_core_soc_destroy(struct ath12k_base *ab)
 
 static int ath12k_core_mac_register(struct ath12k_base *ab)
 {
-	struct ath12k *ar;
-	struct ath12k_pdev *pdev;
+	struct ath12k_hw *ah;
 	int i;
 	int ret;
 
@@ -634,22 +633,23 @@ static int ath12k_core_mac_register(struct ath12k_base *ab)
 	ab->cc_freq_hz = 320000;
 	ab->free_vdev_map = (1LL << (ab->num_radios * TARGET_NUM_VDEVS)) - 1;
 
-	for (i = 0; i < ab->num_radios; i++) {
-		pdev = &ab->pdevs[i];
-		ar = pdev->ar;
+	for (i = 0; i < ab->num_hw; i++) {
+		ah = ab->ah[i];
 
-		ret = ath12k_mac_hw_register(ar);
+		ret = ath12k_mac_hw_register(ah);
 		if (ret)
-			goto err_cleanup;
+			goto err;
 	}
 
 	return 0;
 
-err_cleanup:
+err:
 	for (i = i - 1; i >= 0; i--) {
-		pdev = &ab->pdevs[i];
-		ar = pdev->ar;
-		ath12k_mac_hw_unregister(ar);
+		ah = ab->ah[i];
+		if (!ah)
+			continue;
+
+		ath12k_mac_hw_unregister(ah);
 	}
 
 	return ret;
@@ -657,17 +657,15 @@ static int ath12k_core_mac_register(struct ath12k_base *ab)
 
 static void ath12k_core_mac_unregister(struct ath12k_base *ab)
 {
-	struct ath12k *ar;
-	struct ath12k_pdev *pdev;
+	struct ath12k_hw *ah;
 	int i;
 
-	for (i = 0; i < ab->num_radios; i++) {
-		pdev = &ab->pdevs[i];
-		ar = pdev->ar;
-		if (!ar)
+	for (i = ab->num_hw - 1; i >= 0; i--) {
+		ah = ab->ah[i];
+		if (!ah)
 			continue;
 
-		ath12k_mac_hw_unregister(ar);
+		ath12k_mac_hw_unregister(ah);
 	}
 }
 
@@ -704,23 +702,69 @@ static void ath12k_core_pdev_destroy(struct ath12k_base *ab)
 
 static void ath12k_core_mac_destroy(struct ath12k_base *ab)
 {
-	ath12k_mac_hw_destroy(ab);
+	struct ath12k_pdev *pdev;
+	int i;
+
+	for (i = 0; i < ab->num_radios; i++) {
+		pdev = &ab->pdevs[i];
+		if (!pdev->ar)
+			continue;
+
+		pdev->ar = NULL;
+	}
+
+	for (i = 0; i < ab->num_hw; i++) {
+		if (!ab->ah[i])
+			continue;
+
+		ath12k_mac_hw_destroy(ab->ah[i]);
+		ab->ah[i] = NULL;
+	}
 }
 
 static int ath12k_core_mac_allocate(struct ath12k_base *ab)
 {
-	int ret;
+	struct ath12k_hw *ah;
+	struct ath12k_pdev_map pdev_map[MAX_RADIOS];
+	int ret, i, j;
+	u8 radio_per_hw;
 
 	if (test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags))
 		return 0;
 
-	ret = ath12k_mac_hw_allocate(ab);
-	if (ret)
-		return ret;
+	ab->num_hw = ab->num_radios;
+	radio_per_hw = 1;
+
+	for (i = 0; i < ab->num_hw; i++) {
+		for (j = 0; j < radio_per_hw; j++) {
+			pdev_map[j].ab = ab;
+			pdev_map[j].pdev_idx = (i * radio_per_hw) + j;
+		}
+
+		ah = ath12k_mac_hw_allocate(ab, pdev_map, radio_per_hw);
+		if (!ah) {
+			ath12k_warn(ab, "failed to allocate mac80211 hw device for hw_idx %d\n",
+				    i);
+			goto err;
+		}
+
+		ab->ah[i] = ah;
+	}
 
 	ath12k_dp_pdev_pre_alloc(ab);
 
 	return 0;
+
+err:
+	for (i = i - 1; i >= 0; i--) {
+		if (!ab->ah[i])
+			continue;
+
+		ath12k_mac_hw_destroy(ab->ah[i]);
+		ab->ah[i] = NULL;
+	}
+
+	return ret;
 }
 
 static int ath12k_core_start(struct ath12k_base *ab,
@@ -995,6 +1039,7 @@ static void ath12k_core_pre_reconfigure_recovery(struct ath12k_base *ab)
 {
 	struct ath12k *ar;
 	struct ath12k_pdev *pdev;
+	struct ath12k_hw *ah;
 	int i;
 
 	spin_lock_bh(&ab->base_lock);
@@ -1004,13 +1049,20 @@ static void ath12k_core_pre_reconfigure_recovery(struct ath12k_base *ab)
 	if (ab->is_reset)
 		set_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags);
 
+	for (i = 0; i < ab->num_hw; i++) {
+		if (!ab->ah[i])
+			continue;
+
+		ah = ab->ah[i];
+		ieee80211_stop_queues(ah->hw);
+	}
+
 	for (i = 0; i < ab->num_radios; i++) {
 		pdev = &ab->pdevs[i];
 		ar = pdev->ar;
 		if (!ar || ar->state == ATH12K_STATE_OFF)
 			continue;
 
-		ieee80211_stop_queues(ath12k_ar_to_hw(ar));
 		ath12k_mac_drain_tx(ar);
 		complete(&ar->scan.started);
 		complete(&ar->scan.completed);
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 96295b0260e0..9d26481e8af5 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -474,7 +474,7 @@ struct ath12k_per_peer_tx_stats {
 struct ath12k {
 	struct ath12k_base *ab;
 	struct ath12k_pdev *pdev;
-	struct ieee80211_hw *hw;
+	struct ath12k_hw *ah;
 	struct ath12k_wmi_pdev *wmi;
 	struct ath12k_pdev_dp dp;
 	u8 mac_addr[ETH_ALEN];
@@ -538,6 +538,7 @@ struct ath12k {
 	/* pdev_idx starts from 0 whereas pdev->pdev_id starts with 1 */
 	u8 pdev_idx;
 	u8 lmac_id;
+	u8 hw_link_id;
 
 	struct completion peer_assoc_done;
 	struct completion peer_delete_done;
@@ -597,6 +598,18 @@ struct ath12k {
 	int monitor_vdev_id;
 };
 
+struct ath12k_hw {
+	struct ieee80211_hw *hw;
+
+	/* To synchronize concurrent synchronous mac80211 callback operations,
+	 * concurrent debugfs configuration and concurrent FW statistics events.
+	 */
+	struct mutex conf_mutex;
+
+	u8 num_radio;
+	struct ath12k radio[] __aligned(sizeof(void *));
+};
+
 struct ath12k_band_cap {
 	u32 phy_id;
 	u32 max_bw_supported;
@@ -730,6 +743,17 @@ struct ath12k_base {
 	u8 fw_pdev_count;
 
 	struct ath12k_pdev __rcu *pdevs_active[MAX_RADIOS];
+
+	/* Holds information of wiphy (hw) registration.
+	 *
+	 * In Multi/Single Link Operation case, all pdevs are registered as a
+	 * single wiphy.
+	 * In other (legacy/Non-MLO) cases, each pdev is registered as separate
+	 * wiphys.
+	 */
+	struct ath12k_hw *ah[MAX_RADIOS];
+	u8 num_hw;
+
 	struct ath12k_wmi_hal_reg_capabilities_ext_arg hal_reg_cap[MAX_RADIOS];
 	unsigned long long free_vdev_map;
 	unsigned long long free_vdev_stats_id_map;
@@ -811,6 +835,11 @@ struct ath12k_base {
 	u8 drv_priv[] __aligned(sizeof(void *));
 };
 
+struct ath12k_pdev_map {
+	struct ath12k_base *ab;
+	u8 pdev_idx;
+};
+
 int ath12k_core_qmi_firmware_ready(struct ath12k_base *ab);
 int ath12k_core_pre_init(struct ath12k_base *ab);
 int ath12k_core_init(struct ath12k_base *ath12k);
@@ -897,8 +926,18 @@ static inline const char *ath12k_bus_str(enum ath12k_bus bus)
 	return "unknown";
 }
 
+static inline struct ath12k_hw *ath12k_hw_to_ah(struct ieee80211_hw  *hw)
+{
+	return hw->priv;
+}
+
+static inline struct ath12k *ath12k_ah_to_ar(struct ath12k_hw *ah)
+{
+	return ah->radio;
+}
+
 static inline struct ieee80211_hw *ath12k_ar_to_hw(struct ath12k *ar)
 {
-	return ar->hw;
+	return ar->ah->hw;
 }
 #endif /* _CORE_H_ */
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 293440193374..ef8077c06cb1 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -1124,14 +1124,21 @@ static int ath12k_mac_config(struct ath12k *ar, u32 changed)
 
 static int ath12k_mac_op_config(struct ieee80211_hw *hw, u32 changed)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	int ret;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+
 	ret = ath12k_mac_config(ar, changed);
 	if (ret)
 		ath12k_warn(ar->ab, "failed to update config pdev idx %d: %d\n",
 			    ar->pdev_idx, ret);
 
+	mutex_unlock(&ah->conf_mutex);
+
 	return ret;
 }
 
@@ -2796,14 +2803,21 @@ static void ath12k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
 					   struct ieee80211_bss_conf *info,
 					   u64 changed)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+
 	mutex_lock(&ar->conf_mutex);
 
 	ath12k_mac_bss_info_changed(ar, arvif, info, changed);
 
 	mutex_unlock(&ar->conf_mutex);
+
+	mutex_unlock(&ah->conf_mutex);
 }
 
 void __ath12k_mac_scan_finish(struct ath12k *ar)
@@ -2974,13 +2988,18 @@ static int ath12k_mac_op_hw_scan(struct ieee80211_hw *hw,
 				 struct ieee80211_vif *vif,
 				 struct ieee80211_scan_request *hw_req)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	struct cfg80211_scan_request *req = &hw_req->req;
 	struct ath12k_wmi_scan_req_arg arg = {};
 	int ret;
 	int i;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+
 	mutex_lock(&ar->conf_mutex);
 
 	spin_lock_bh(&ar->data_lock);
@@ -3059,18 +3078,28 @@ static int ath12k_mac_op_hw_scan(struct ieee80211_hw *hw,
 		kfree(arg.extraie.ptr);
 
 	mutex_unlock(&ar->conf_mutex);
+
+	mutex_unlock(&ah->conf_mutex);
+
 	return ret;
 }
 
 static void ath12k_mac_op_cancel_hw_scan(struct ieee80211_hw *hw,
 					 struct ieee80211_vif *vif)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
 
 	mutex_lock(&ar->conf_mutex);
 	ath12k_scan_abort(ar);
 	mutex_unlock(&ar->conf_mutex);
 
+	mutex_unlock(&ah->conf_mutex);
+
 	cancel_delayed_work_sync(&ar->scan.timeout);
 }
 
@@ -3193,8 +3222,9 @@ static int ath12k_mac_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 				 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 				 struct ieee80211_key_conf *key)
 {
-	struct ath12k *ar = hw->priv;
-	struct ath12k_base *ab = ar->ab;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+	struct ath12k_base *ab;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	struct ath12k_peer *peer;
 	struct ath12k_sta *arsta;
@@ -3209,11 +3239,20 @@ static int ath12k_mac_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 	    key->cipher == WLAN_CIPHER_SUITE_BIP_CMAC_256)
 		return 1;
 
-	if (test_bit(ATH12K_FLAG_HW_CRYPTO_DISABLED, &ar->ab->dev_flags))
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+	ab = ar->ab;
+
+	if (test_bit(ATH12K_FLAG_HW_CRYPTO_DISABLED, &ar->ab->dev_flags)) {
+		mutex_unlock(&ah->conf_mutex);
 		return 1;
+	}
 
-	if (key->keyidx > WMI_MAX_KEY_INDEX)
+	if (key->keyidx > WMI_MAX_KEY_INDEX) {
+		mutex_unlock(&ah->conf_mutex);
 		return -ENOSPC;
+	}
 
 	mutex_lock(&ar->conf_mutex);
 
@@ -3309,6 +3348,7 @@ static int ath12k_mac_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 
 exit:
 	mutex_unlock(&ar->conf_mutex);
+	mutex_unlock(&ah->conf_mutex);
 	return ret;
 }
 
@@ -3784,7 +3824,8 @@ static int ath12k_mac_op_sta_state(struct ieee80211_hw *hw,
 				   enum ieee80211_sta_state old_state,
 				   enum ieee80211_sta_state new_state)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	struct ath12k_sta *arsta = ath12k_sta_to_arsta(sta);
 	struct ath12k_peer *peer;
@@ -3795,6 +3836,10 @@ static int ath12k_mac_op_sta_state(struct ieee80211_hw *hw,
 	     new_state == IEEE80211_STA_NOTEXIST))
 		cancel_work_sync(&arsta->update_wk);
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+
 	mutex_lock(&ar->conf_mutex);
 
 	if (old_state == IEEE80211_STA_NOTEXIST &&
@@ -3890,6 +3935,9 @@ static int ath12k_mac_op_sta_state(struct ieee80211_hw *hw,
 	}
 
 	mutex_unlock(&ar->conf_mutex);
+
+	mutex_unlock(&ah->conf_mutex);
+
 	return ret;
 }
 
@@ -3897,7 +3945,8 @@ static int ath12k_mac_op_sta_set_txpwr(struct ieee80211_hw *hw,
 				       struct ieee80211_vif *vif,
 				       struct ieee80211_sta *sta)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	int ret;
 	s16 txpwr;
@@ -3913,6 +3962,10 @@ static int ath12k_mac_op_sta_set_txpwr(struct ieee80211_hw *hw,
 	if (txpwr > ATH12K_TX_POWER_MAX_VAL || txpwr < ATH12K_TX_POWER_MIN_VAL)
 		return -EINVAL;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+
 	mutex_lock(&ar->conf_mutex);
 
 	ret = ath12k_wmi_set_peer_param(ar, sta->addr, arvif->vdev_id,
@@ -3925,6 +3978,7 @@ static int ath12k_mac_op_sta_set_txpwr(struct ieee80211_hw *hw,
 
 out:
 	mutex_unlock(&ar->conf_mutex);
+	mutex_unlock(&ah->conf_mutex);
 	return ret;
 }
 
@@ -3933,12 +3987,15 @@ static void ath12k_mac_op_sta_rc_update(struct ieee80211_hw *hw,
 					struct ieee80211_sta *sta,
 					u32 changed)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	struct ath12k_sta *arsta = ath12k_sta_to_arsta(sta);
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	struct ath12k_peer *peer;
 	u32 bw, smps;
 
+	ar = ath12k_ah_to_ar(ah);
+
 	spin_lock_bh(&ar->ab->base_lock);
 
 	peer = ath12k_peer_find(ar->ab, arvif->vdev_id, sta->addr);
@@ -4113,14 +4170,21 @@ static int ath12k_mac_op_conf_tx(struct ieee80211_hw *hw,
 				 unsigned int link_id, u16 ac,
 				 const struct ieee80211_tx_queue_params *params)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	int ret;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+
 	mutex_lock(&ar->conf_mutex);
 	ret = ath12k_mac_conf_tx(arvif, link_id, ac, params);
 	mutex_unlock(&ar->conf_mutex);
 
+	mutex_unlock(&ah->conf_mutex);
+
 	return ret;
 }
 
@@ -5018,10 +5082,10 @@ static void ath12k_mac_op_tx(struct ieee80211_hw *hw,
 			     struct sk_buff *skb)
 {
 	struct ath12k_skb_cb *skb_cb = ATH12K_SKB_CB(skb);
-	struct ath12k *ar = hw->priv;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct ieee80211_vif *vif = info->control.vif;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
+	struct ath12k *ar = arvif->ar;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 	struct ieee80211_key_conf *key = info->control.hw_key;
 	u32 info_flags = info->flags;
@@ -5215,19 +5279,25 @@ static int ath12k_mac_start(struct ath12k *ar)
 
 static int ath12k_mac_op_start(struct ieee80211_hw *hw)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar = ath12k_ah_to_ar(ah);
 	struct ath12k_base *ab = ar->ab;
 	int ret;
 
 	ath12k_mac_drain_tx(ar);
 
+	mutex_lock(&ah->conf_mutex);
+
 	ret = ath12k_mac_start(ar);
 	if (ret) {
 		ath12k_err(ab, "fail to start mac operations in pdev idx %d ret %d\n",
 			   ar->pdev_idx, ret);
+		mutex_unlock(&ah->conf_mutex);
 		return ret;
 	}
 
+	mutex_unlock(&ah->conf_mutex);
+
 	return 0;
 }
 
@@ -5323,11 +5393,16 @@ static void ath12k_mac_stop(struct ath12k *ar)
 
 static void ath12k_mac_op_stop(struct ieee80211_hw *hw)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar = ath12k_ah_to_ar(ah);
 
 	ath12k_mac_drain_tx(ar);
 
+	mutex_lock(&ah->conf_mutex);
+
 	ath12k_mac_stop(ar);
+
+	mutex_unlock(&ah->conf_mutex);
 }
 
 static u8
@@ -5503,8 +5578,9 @@ static void ath12k_mac_op_update_vif_offload(struct ieee80211_hw *hw,
 static int ath12k_mac_op_add_interface(struct ieee80211_hw *hw,
 				       struct ieee80211_vif *vif)
 {
-	struct ath12k *ar = hw->priv;
-	struct ath12k_base *ab = ar->ab;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+	struct ath12k_base *ab;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	struct ath12k_wmi_vdev_create_arg vdev_arg = {0};
 	struct ath12k_wmi_peer_create_arg peer_param;
@@ -5516,6 +5592,11 @@ static int ath12k_mac_op_add_interface(struct ieee80211_hw *hw,
 
 	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+	ab = ar->ab;
+
 	mutex_lock(&ar->conf_mutex);
 
 	if (vif->type == NL80211_IFTYPE_AP &&
@@ -5695,6 +5776,7 @@ static int ath12k_mac_op_add_interface(struct ieee80211_hw *hw,
 		ath12k_mac_monitor_vdev_create(ar);
 
 	mutex_unlock(&ar->conf_mutex);
+	mutex_unlock(&ah->conf_mutex);
 
 	return ret;
 
@@ -5730,6 +5812,7 @@ static int ath12k_mac_op_add_interface(struct ieee80211_hw *hw,
 
 err:
 	mutex_unlock(&ar->conf_mutex);
+	mutex_unlock(&ah->conf_mutex);
 
 	return ret;
 }
@@ -5762,12 +5845,18 @@ static void ath12k_mac_vif_unref(struct ath12k_dp *dp, struct ieee80211_vif *vif
 static void ath12k_mac_op_remove_interface(struct ieee80211_hw *hw,
 					   struct ieee80211_vif *vif)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
-	struct ath12k_base *ab = ar->ab;
+	struct ath12k_base *ab;
 	unsigned long time_left;
 	int ret;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+	ab = ar->ab;
+
 	mutex_lock(&ar->conf_mutex);
 
 	ath12k_dbg(ab, ATH12K_DBG_MAC, "mac remove interface (vdev %d)\n",
@@ -5831,6 +5920,7 @@ static void ath12k_mac_op_remove_interface(struct ieee80211_hw *hw,
 	/* TODO: recal traffic pause state based on the available vdevs */
 
 	mutex_unlock(&ar->conf_mutex);
+	mutex_unlock(&ah->conf_mutex);
 }
 
 /* FIXME: Has to be verified. */
@@ -5877,7 +5967,12 @@ static void ath12k_mac_op_configure_filter(struct ieee80211_hw *hw,
 					   unsigned int *total_flags,
 					   u64 multicast)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
 
 	mutex_lock(&ar->conf_mutex);
 
@@ -5885,11 +5980,18 @@ static void ath12k_mac_op_configure_filter(struct ieee80211_hw *hw,
 	ath12k_mac_configure_filter(ar, *total_flags);
 
 	mutex_unlock(&ar->conf_mutex);
+
+	mutex_unlock(&ah->conf_mutex);
 }
 
 static int ath12k_mac_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
 
 	mutex_lock(&ar->conf_mutex);
 
@@ -5898,18 +6000,27 @@ static int ath12k_mac_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *
 
 	mutex_unlock(&ar->conf_mutex);
 
+	mutex_unlock(&ah->conf_mutex);
+
 	return 0;
 }
 
 static int ath12k_mac_op_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	int ret;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+
 	mutex_lock(&ar->conf_mutex);
 	ret = __ath12k_set_antenna(ar, tx_ant, rx_ant);
 	mutex_unlock(&ar->conf_mutex);
 
+	mutex_unlock(&ah->conf_mutex);
+
 	return ret;
 }
 
@@ -5947,10 +6058,15 @@ static int ath12k_mac_op_ampdu_action(struct ieee80211_hw *hw,
 				      struct ieee80211_vif *vif,
 				      struct ieee80211_ampdu_params *params)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	int ret = -EINVAL;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+
 	mutex_lock(&ar->conf_mutex);
 	ret = ath12k_mac_ampdu_action(arvif, params);
 	mutex_unlock(&ar->conf_mutex);
@@ -5959,14 +6075,22 @@ static int ath12k_mac_op_ampdu_action(struct ieee80211_hw *hw,
 		ath12k_warn(ar->ab, "pdev idx %d unable to perform ampdu action %d ret %d\n",
 			    ar->pdev_idx, params->action, ret);
 
+	mutex_unlock(&ah->conf_mutex);
+
 	return ret;
 }
 
 static int ath12k_mac_op_add_chanctx(struct ieee80211_hw *hw,
 				     struct ieee80211_chanctx_conf *ctx)
 {
-	struct ath12k *ar = hw->priv;
-	struct ath12k_base *ab = ar->ab;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+	struct ath12k_base *ab;
+
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+	ab = ar->ab;
 
 	ath12k_dbg(ab, ATH12K_DBG_MAC,
 		   "mac chanctx add freq %u width %d ptr %pK\n",
@@ -5983,14 +6107,22 @@ static int ath12k_mac_op_add_chanctx(struct ieee80211_hw *hw,
 
 	mutex_unlock(&ar->conf_mutex);
 
+	mutex_unlock(&ah->conf_mutex);
+
 	return 0;
 }
 
 static void ath12k_mac_op_remove_chanctx(struct ieee80211_hw *hw,
 					 struct ieee80211_chanctx_conf *ctx)
 {
-	struct ath12k *ar = hw->priv;
-	struct ath12k_base *ab = ar->ab;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+	struct ath12k_base *ab;
+
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+	ab = ar->ab;
 
 	ath12k_dbg(ab, ATH12K_DBG_MAC,
 		   "mac chanctx remove freq %u width %d ptr %pK\n",
@@ -6006,6 +6138,8 @@ static void ath12k_mac_op_remove_chanctx(struct ieee80211_hw *hw,
 	spin_unlock_bh(&ar->data_lock);
 
 	mutex_unlock(&ar->conf_mutex);
+
+	mutex_unlock(&ah->conf_mutex);
 }
 
 static enum wmi_phy_mode
@@ -6398,8 +6532,14 @@ static void ath12k_mac_op_change_chanctx(struct ieee80211_hw *hw,
 					 struct ieee80211_chanctx_conf *ctx,
 					 u32 changed)
 {
-	struct ath12k *ar = hw->priv;
-	struct ath12k_base *ab = ar->ab;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+	struct ath12k_base *ab;
+
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+	ab = ar->ab;
 
 	mutex_lock(&ar->conf_mutex);
 
@@ -6421,6 +6561,7 @@ static void ath12k_mac_op_change_chanctx(struct ieee80211_hw *hw,
 
 unlock:
 	mutex_unlock(&ar->conf_mutex);
+	mutex_unlock(&ah->conf_mutex);
 }
 
 static int ath12k_start_vdev_delay(struct ath12k *ar,
@@ -6461,12 +6602,18 @@ ath12k_mac_op_assign_vif_chanctx(struct ieee80211_hw *hw,
 				 struct ieee80211_bss_conf *link_conf,
 				 struct ieee80211_chanctx_conf *ctx)
 {
-	struct ath12k *ar = hw->priv;
-	struct ath12k_base *ab = ar->ab;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+	struct ath12k_base *ab;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	int ret;
 	struct ath12k_wmi_peer_create_arg param;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+	ab = ar->ab;
+
 	mutex_lock(&ar->conf_mutex);
 
 	ath12k_dbg(ab, ATH12K_DBG_MAC,
@@ -6530,6 +6677,7 @@ ath12k_mac_op_assign_vif_chanctx(struct ieee80211_hw *hw,
 
 out:
 	mutex_unlock(&ar->conf_mutex);
+	mutex_unlock(&ah->conf_mutex);
 
 	return ret;
 }
@@ -6540,11 +6688,17 @@ ath12k_mac_op_unassign_vif_chanctx(struct ieee80211_hw *hw,
 				   struct ieee80211_bss_conf *link_conf,
 				   struct ieee80211_chanctx_conf *ctx)
 {
-	struct ath12k *ar = hw->priv;
-	struct ath12k_base *ab = ar->ab;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+	struct ath12k_base *ab;
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	int ret;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+	ab = ar->ab;
+
 	mutex_lock(&ar->conf_mutex);
 
 	ath12k_dbg(ab, ATH12K_DBG_MAC,
@@ -6562,6 +6716,7 @@ ath12k_mac_op_unassign_vif_chanctx(struct ieee80211_hw *hw,
 		ret = ath12k_mac_monitor_stop(ar);
 		if (ret) {
 			mutex_unlock(&ar->conf_mutex);
+			mutex_unlock(&ah->conf_mutex);
 			return;
 		}
 
@@ -6584,6 +6739,7 @@ ath12k_mac_op_unassign_vif_chanctx(struct ieee80211_hw *hw,
 		ath12k_mac_monitor_stop(ar);
 
 	mutex_unlock(&ar->conf_mutex);
+	mutex_unlock(&ah->conf_mutex);
 }
 
 static int
@@ -6592,7 +6748,12 @@ ath12k_mac_op_switch_vif_chanctx(struct ieee80211_hw *hw,
 				 int n_vifs,
 				 enum ieee80211_chanctx_switch_mode mode)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
 
 	mutex_lock(&ar->conf_mutex);
 
@@ -6603,6 +6764,8 @@ ath12k_mac_op_switch_vif_chanctx(struct ieee80211_hw *hw,
 
 	mutex_unlock(&ar->conf_mutex);
 
+	mutex_unlock(&ah->conf_mutex);
+
 	return 0;
 }
 
@@ -6634,10 +6797,19 @@ ath12k_set_vdev_param_to_all_vifs(struct ath12k *ar, int param, u32 value)
  */
 static int ath12k_mac_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 {
-	struct ath12k *ar = hw->priv;
-	int param_id = WMI_VDEV_PARAM_RTS_THRESHOLD;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+	int param_id = WMI_VDEV_PARAM_RTS_THRESHOLD, ret;
+
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
 
-	return ath12k_set_vdev_param_to_all_vifs(ar, param_id, value);
+	ret = ath12k_set_vdev_param_to_all_vifs(ar, param_id, value);
+
+	mutex_unlock(&ah->conf_mutex);
+
+	return ret;
 }
 
 static int ath12k_mac_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
@@ -6676,7 +6848,8 @@ static void ath12k_mac_flush(struct ath12k *ar)
 static void ath12k_mac_op_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 				u32 queues, bool drop)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar = ath12k_ah_to_ar(ah);
 
 	if (drop)
 		return;
@@ -6911,6 +7084,7 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 			       struct ieee80211_vif *vif,
 			       const struct cfg80211_bitrate_mask *mask)
 {
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
 	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
 	struct cfg80211_chan_def def;
 	struct ath12k *ar = arvif->ar;
@@ -6928,14 +7102,18 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 	if (ath12k_mac_vif_chan(vif, &def))
 		return -EPERM;
 
+	mutex_lock(&ah->conf_mutex);
+
 	band = def.chan->band;
 	ht_mcs_mask = mask->control[band].ht_mcs;
 	vht_mcs_mask = mask->control[band].vht_mcs;
 	ldpc = !!(ar->ht_cap_info & WMI_HT_CAP_LDPC);
 
 	sgi = mask->control[band].gi;
-	if (sgi == NL80211_TXRATE_FORCE_LGI)
-		return -EINVAL;
+	if (sgi == NL80211_TXRATE_FORCE_LGI) {
+		ret = -EINVAL;
+		goto out;
+	}
 
 	/* mac80211 doesn't support sending a fixed HT/VHT MCS alone, rather it
 	 * requires passing at least one of used basic rates along with them.
@@ -6951,7 +7129,7 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 		if (ret) {
 			ath12k_warn(ar->ab, "failed to get single legacy rate for vdev %i: %d\n",
 				    arvif->vdev_id, ret);
-			return ret;
+			goto out;
 		}
 		ieee80211_iterate_stations_atomic(hw,
 						  ath12k_mac_disable_peer_fixed_rate,
@@ -6996,7 +7174,8 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 			 */
 			ath12k_warn(ar->ab,
 				    "Setting more than one MCS Value in bitrate mask not supported\n");
-			return -EINVAL;
+			ret = -EINVAL;
+			goto out;
 		}
 
 		ieee80211_iterate_stations_atomic(hw,
@@ -7023,6 +7202,9 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
 
 	mutex_unlock(&ar->conf_mutex);
 
+out:
+	mutex_unlock(&ah->conf_mutex);
+
 	return ret;
 }
 
@@ -7030,14 +7212,20 @@ static void
 ath12k_mac_op_reconfig_complete(struct ieee80211_hw *hw,
 				enum ieee80211_reconfig_type reconfig_type)
 {
-	struct ath12k *ar = hw->priv;
-	struct ath12k_base *ab = ar->ab;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
+	struct ath12k_base *ab;
 	struct ath12k_vif *arvif;
 	int recovery_count;
 
 	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
 		return;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+	ab = ar->ab;
+
 	mutex_lock(&ar->conf_mutex);
 
 	if (ar->state == ATH12K_STATE_RESTARTED) {
@@ -7084,6 +7272,8 @@ ath12k_mac_op_reconfig_complete(struct ieee80211_hw *hw,
 	}
 
 	mutex_unlock(&ar->conf_mutex);
+
+	mutex_unlock(&ah->conf_mutex);
 }
 
 static void
@@ -7121,7 +7311,8 @@ ath12k_mac_update_bss_chan_survey(struct ath12k *ar,
 static int ath12k_mac_op_get_survey(struct ieee80211_hw *hw, int idx,
 				    struct survey_info *survey)
 {
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar;
 	struct ieee80211_supported_band *sband;
 	struct survey_info *ar_survey;
 	int ret = 0;
@@ -7129,6 +7320,10 @@ static int ath12k_mac_op_get_survey(struct ieee80211_hw *hw, int idx,
 	if (idx >= ATH12K_NUM_CHANS)
 		return -ENOENT;
 
+	mutex_lock(&ah->conf_mutex);
+
+	ar = ath12k_ah_to_ar(ah);
+
 	ar_survey = &ar->survey[idx];
 
 	mutex_lock(&ar->conf_mutex);
@@ -7160,6 +7355,8 @@ static int ath12k_mac_op_get_survey(struct ieee80211_hw *hw, int idx,
 
 exit:
 	mutex_unlock(&ar->conf_mutex);
+	mutex_unlock(&ah->conf_mutex);
+
 	return ret;
 }
 
@@ -7359,20 +7556,44 @@ static int ath12k_mac_setup_channels_rates(struct ath12k *ar,
 	return 0;
 }
 
-static int ath12k_mac_setup_iface_combinations(struct ath12k *ar)
+static u16 ath12k_mac_get_ifmodes(struct ath12k_hw *ah)
 {
-	struct ath12k_base *ab = ar->ab;
-	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
-	struct wiphy *wiphy = hw->wiphy;
+	struct ath12k *ar = ath12k_ah_to_ar(ah);
+	u16 interface_modes = U16_MAX;
+
+	interface_modes &= ar->ab->hw_params->interface_modes;
+
+	return interface_modes == U16_MAX ? 0 : interface_modes;
+}
+
+static bool ath12k_mac_is_iface_mode_enable(struct ath12k_hw *ah,
+					    enum nl80211_iftype type)
+{
+	struct ath12k *ar = ath12k_ah_to_ar(ah);
+	u16 interface_modes, mode;
+	bool is_enable = true;
+
+	mode = BIT(type);
+
+	interface_modes = ar->ab->hw_params->interface_modes;
+	if (!(interface_modes & mode))
+		is_enable = false;
+
+	return is_enable;
+}
+
+static int ath12k_mac_setup_iface_combinations(struct ath12k_hw *ah)
+{
+	struct wiphy *wiphy = ah->hw->wiphy;
 	struct ieee80211_iface_combination *combinations;
 	struct ieee80211_iface_limit *limits;
 	int n_limits, max_interfaces;
 	bool ap, mesh;
 
-	ap = ab->hw_params->interface_modes & BIT(NL80211_IFTYPE_AP);
+	ap = ath12k_mac_is_iface_mode_enable(ah, NL80211_IFTYPE_AP);
 
 	mesh = IS_ENABLED(CONFIG_MAC80211_MESH) &&
-		ab->hw_params->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT);
+		ath12k_mac_is_iface_mode_enable(ah, NL80211_IFTYPE_MESH_POINT);
 
 	combinations = kzalloc(sizeof(*combinations), GFP_KERNEL);
 	if (!combinations)
@@ -7467,10 +7688,11 @@ static void ath12k_mac_cleanup_unregister(struct ath12k *ar)
 	kfree(ar->mac.sbands[NL80211_BAND_6GHZ].channels);
 }
 
-void ath12k_mac_hw_unregister(struct ath12k *ar)
+void ath12k_mac_hw_unregister(struct ath12k_hw *ah)
 {
-	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
+	struct ieee80211_hw *hw = ah->hw;
 	struct wiphy *wiphy = hw->wiphy;
+	struct ath12k *ar = ath12k_ah_to_ar(ah);
 
 	cancel_work_sync(&ar->regd_update_work);
 
@@ -7512,13 +7734,14 @@ static int ath12k_mac_setup_register(struct ath12k *ar,
 	return 0;
 }
 
-int ath12k_mac_hw_register(struct ath12k *ar)
+int ath12k_mac_hw_register(struct ath12k_hw *ah)
 {
-	struct ath12k_base *ab = ar->ab;
-	struct ieee80211_hw *hw = ath12k_ar_to_hw(ar);
+	struct ieee80211_hw *hw = ah->hw;
 	struct wiphy *wiphy = hw->wiphy;
-	struct ath12k_pdev *pdev = ar->pdev;
-	struct ath12k_pdev_cap *cap = &pdev->cap;
+	struct ath12k *ar = ath12k_ah_to_ar(ah);
+	struct ath12k_base *ab = ar->ab;
+	struct ath12k_pdev *pdev;
+	struct ath12k_pdev_cap *cap;
 	static const u32 cipher_suites[] = {
 		WLAN_CIPHER_SUITE_TKIP,
 		WLAN_CIPHER_SUITE_CCMP,
@@ -7533,30 +7756,34 @@ int ath12k_mac_hw_register(struct ath12k *ar)
 	int ret;
 	u32 ht_cap = 0;
 
-	if (ab->pdevs_macaddr_valid) {
+	pdev = ar->pdev;
+
+	if (ab->pdevs_macaddr_valid)
 		ether_addr_copy(ar->mac_addr, pdev->mac_addr);
-	} else {
+	else
 		ether_addr_copy(ar->mac_addr, ab->mac_addr);
-		ar->mac_addr[4] += ar->pdev_idx;
-	}
 
 	ret = ath12k_mac_setup_register(ar, &ht_cap, hw->wiphy->bands);
 	if (ret)
 		goto out;
 
+	wiphy->max_ap_assoc_sta = ar->max_num_stations;
+
+	cap = &pdev->cap;
+
+	wiphy->available_antennas_rx = cap->rx_chain_mask;
+	wiphy->available_antennas_tx = cap->tx_chain_mask;
+
 	SET_IEEE80211_PERM_ADDR(hw, ar->mac_addr);
 	SET_IEEE80211_DEV(hw, ab->dev);
 
-	ret = ath12k_mac_setup_iface_combinations(ar);
+	ret = ath12k_mac_setup_iface_combinations(ah);
 	if (ret) {
-		ath12k_err(ar->ab, "failed to setup interface combinations: %d\n", ret);
-		goto err_setup_unregister;
+		ath12k_err(ab, "failed to setup interface combinations: %d\n", ret);
+		goto err_cleanup_unregister;
 	}
 
-	wiphy->available_antennas_rx = cap->rx_chain_mask;
-	wiphy->available_antennas_tx = cap->tx_chain_mask;
-
-	wiphy->interface_modes = ab->hw_params->interface_modes;
+	wiphy->interface_modes = ath12k_mac_get_ifmodes(ah);
 
 	if (wiphy->bands[NL80211_BAND_2GHZ] &&
 	    wiphy->bands[NL80211_BAND_5GHZ] &&
@@ -7609,8 +7836,6 @@ int ath12k_mac_hw_register(struct ath12k *ar)
 	wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
 				   NL80211_FEATURE_AP_SCAN;
 
-	wiphy->max_ap_assoc_sta = ar->max_num_stations;
-
 	hw->queues = ATH12K_HW_MAX_QUEUES;
 	wiphy->tx_queue_len = ATH12K_QUEUE_LEN;
 	hw->offchannel_tx_hw_queue = ATH12K_HW_MAX_QUEUES - 1;
@@ -7647,7 +7872,7 @@ int ath12k_mac_hw_register(struct ath12k *ar)
 
 	ret = ieee80211_register_hw(hw);
 	if (ret) {
-		ath12k_err(ar->ab, "ieee80211 registration failed: %d\n", ret);
+		ath12k_err(ab, "ieee80211 registration failed: %d\n", ret);
 		goto err_free_if_combs;
 	}
 
@@ -7675,14 +7900,12 @@ int ath12k_mac_hw_register(struct ath12k *ar)
 	kfree(wiphy->iface_combinations[0].limits);
 	kfree(wiphy->iface_combinations);
 
-err_setup_unregister:
-	kfree(ar->mac.sbands[NL80211_BAND_2GHZ].channels);
-	kfree(ar->mac.sbands[NL80211_BAND_5GHZ].channels);
-	kfree(ar->mac.sbands[NL80211_BAND_6GHZ].channels);
+err_cleanup_unregister:
+	ath12k_mac_cleanup_unregister(ar);
 
+out:
 	SET_IEEE80211_DEV(hw, NULL);
 
-out:
 	return ret;
 }
 
@@ -7726,56 +7949,50 @@ static void ath12k_mac_setup(struct ath12k *ar)
 	clear_bit(ATH12K_FLAG_MONITOR_ENABLED, &ar->monitor_flags);
 }
 
-int ath12k_mac_hw_allocate(struct ath12k_base *ab)
+struct ath12k_hw *ath12k_mac_hw_allocate(struct ath12k_base *ab,
+					 struct ath12k_pdev_map *pdev_map,
+					 u8 num_pdev_map)
 {
 	struct ieee80211_hw *hw;
 	struct ath12k *ar;
 	struct ath12k_pdev *pdev;
-	int ret;
+	struct ath12k_hw *ah;
 	int i;
+	u8 pdev_idx;
 
-	for (i = 0; i < ab->num_radios; i++) {
-		pdev = &ab->pdevs[i];
-		hw = ieee80211_alloc_hw(sizeof(struct ath12k), &ath12k_ops);
-		if (!hw) {
-			ath12k_warn(ab, "failed to allocate mac80211 hw device\n");
-			ret = -ENOMEM;
-			goto err_free_mac;
-		}
+	hw = ieee80211_alloc_hw(struct_size(ah, radio, num_pdev_map),
+				&ath12k_ops);
+	if (!hw)
+		return NULL;
+
+	ah = ath12k_hw_to_ah(hw);
+	ah->hw = hw;
+	ah->num_radio = num_pdev_map;
+
+	mutex_init(&ah->conf_mutex);
 
-		ar = hw->priv;
-		ar->hw = hw;
+	for (i = 0; i < num_pdev_map; i++) {
+		ab = pdev_map[i].ab;
+		pdev_idx = pdev_map[i].pdev_idx;
+		pdev = &ab->pdevs[pdev_idx];
+
+		ar = ath12k_ah_to_ar(ah);
+		ar->ah = ah;
 		ar->ab = ab;
+		ar->hw_link_id = i;
 		ar->pdev = pdev;
-		ar->pdev_idx = i;
+		ar->pdev_idx = pdev_idx;
 		pdev->ar = ar;
 
 		ath12k_mac_setup(ar);
 	}
 
-	return 0;
-
-err_free_mac:
-	ath12k_mac_hw_destroy(ab);
-
-	return ret;
+	return ah;
 }
 
-void ath12k_mac_hw_destroy(struct ath12k_base *ab)
+void ath12k_mac_hw_destroy(struct ath12k_hw *ah)
 {
-	struct ath12k *ar;
-	struct ath12k_pdev *pdev;
-	int i;
-
-	for (i = 0; i < ab->num_radios; i++) {
-		pdev = &ab->pdevs[i];
-		ar = pdev->ar;
-		if (!ar)
-			continue;
-
-		ieee80211_free_hw(ath12k_ar_to_hw(ar));
-		pdev->ar = NULL;
-	}
+	ieee80211_free_hw(ah->hw);
 }
 
 enum nl80211_he_ru_alloc ath12k_mac_phy_he_ru_to_nl80211_he_ru_alloc(u16 ru_phy)
diff --git a/drivers/net/wireless/ath/ath12k/mac.h b/drivers/net/wireless/ath/ath12k/mac.h
index f71dd905a5d5..3ad1c112b08b 100644
--- a/drivers/net/wireless/ath/ath12k/mac.h
+++ b/drivers/net/wireless/ath/ath12k/mac.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: BSD-3-Clause-Clear */
 /*
  * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #ifndef ATH12K_MAC_H
@@ -12,6 +12,8 @@
 
 struct ath12k;
 struct ath12k_base;
+struct ath12k_hw;
+struct ath12k_pdev_map;
 
 struct ath12k_generic_iter {
 	struct ath12k *ar;
@@ -48,10 +50,12 @@ enum ath12k_supported_bw {
 
 extern const struct htt_rx_ring_tlv_filter ath12k_mac_mon_status_filter_default;
 
-void ath12k_mac_hw_destroy(struct ath12k_base *ab);
-void ath12k_mac_hw_unregister(struct ath12k *ar);
-int ath12k_mac_hw_register(struct ath12k *ar);
-int ath12k_mac_hw_allocate(struct ath12k_base *ab);
+void ath12k_mac_hw_destroy(struct ath12k_hw *ah);
+void ath12k_mac_hw_unregister(struct ath12k_hw *ah);
+int ath12k_mac_hw_register(struct ath12k_hw *ah);
+struct ath12k_hw *ath12k_mac_hw_allocate(struct ath12k_base *ab,
+					 struct ath12k_pdev_map *pdev_map,
+					 u8 num_pdev_map);
 int ath12k_mac_hw_ratecode_to_legacy_rate(u8 hw_rc, u8 preamble, u8 *rateidx,
 					  u16 *rate);
 u8 ath12k_mac_bitrate_to_idx(const struct ieee80211_supported_band *sband,
diff --git a/drivers/net/wireless/ath/ath12k/reg.c b/drivers/net/wireless/ath/ath12k/reg.c
index 88e71d171355..a164f15d1e2b 100644
--- a/drivers/net/wireless/ath/ath12k/reg.c
+++ b/drivers/net/wireless/ath/ath12k/reg.c
@@ -48,7 +48,8 @@ ath12k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
 {
 	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 	struct ath12k_wmi_init_country_arg arg;
-	struct ath12k *ar = hw->priv;
+	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
+	struct ath12k *ar = ath12k_ah_to_ar(ah);
 	int ret;
 
 	ath12k_dbg(ar->ab, ATH12K_DBG_REG,
-- 
2.34.1

Re: [PATCH v2 1/2] wifi: ath12k: Refactor the mac80211 hw access from link/radio

[Jeff Johnson]

On 1/11/2024 6:42 PM, Karthikeyan Periyasamy wrote:
> Currently, mac80211 hardware accesses link/radio structure directly in
> multiple locations. Introduce helper function to avoid this direct
> access, as this change will facilitate refactoring for Multi-link
> operation support.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
> 
> Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>

Re: [PATCH v2 2/2] wifi: ath12k: Introduce the container for mac80211 hw

[Jeff Johnson]

On 1/11/2024 6:42 PM, Karthikeyan Periyasamy wrote:
> To support multi link operation, we need to combine all the link/pdev
> under a single wiphy. This avoids the overhead of synchronization
> across multiple hardware instances in both the cfg80211 and mac80211
> layers. Currently, each link/pdev is registered as separate wiphy,
> tightly coupled with link/pdev/radio (ar) structure. To enable single
> wiphy registration within the chip, we decouple the wiphy data entity from
> the link/pdev/radio (ar) structure and move it under the chip (ab)
> structure with a new data container (ath12k_hw) structure. This approach
> improves scalability for future multi link operation support.
> 
> 		mac80211 hw private data structure diagram
> 		------------------------------------------
> 
> 	Now						After
> 
>  +---------------------+                          +---------------------+
>  |mac80211 hw priv data|                          |mac80211 hw priv data|
>  |                     |                          |                     |
>  |                     |                          |                     |
>  |                     |                          |                     |
>  |                     |                          |   ath12k_hw (ah)    |
>  |                     |                          |                     |
>  |                     |  +------------------->   |                     |
>  |    ath12k (ar)      |                          |   +-------------+   |
>  |                     |                          |   |             |   |
>  |                     |                          |   | ath12k (ar) |   |
>  |                     |                          |   |             |   |
>  |                     |                          |   |             |   |
>  |                     |                          |   +-------------+   |
>  |                     |                          |                     |
>  |                     |                          |                     |
>  +---------------------+                          +---------------------+
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
> 
> Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>

Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>

Re: [PATCH v2 2/2] wifi: ath12k: Introduce the container for mac80211 hw

[Kalle Valo]

Karthikeyan Periyasamy <quic_periyasa@quicinc.com> writes:

> To support multi link operation, we need to combine all the link/pdev
> under a single wiphy. This avoids the overhead of synchronization
> across multiple hardware instances in both the cfg80211 and mac80211
> layers. Currently, each link/pdev is registered as separate wiphy,
> tightly coupled with link/pdev/radio (ar) structure. To enable single
> wiphy registration within the chip, we decouple the wiphy data entity from
> the link/pdev/radio (ar) structure and move it under the chip (ab)
> structure with a new data container (ath12k_hw) structure. This approach
> improves scalability for future multi link operation support.

What about struct ath12k_pdev? Do we need it still or should it be removed?

>  static void ath12k_mac_op_cancel_hw_scan(struct ieee80211_hw *hw,
>  					 struct ieee80211_vif *vif)
>  {
> -	struct ath12k *ar = hw->priv;
> +	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
> +	struct ath12k *ar;
> +
> +	mutex_lock(&ah->conf_mutex);
> +
> +	ar = ath12k_ah_to_ar(ah);
>  
>  	mutex_lock(&ar->conf_mutex);
>  	ath12k_scan_abort(ar);
>  	mutex_unlock(&ar->conf_mutex);
>  
> +	mutex_unlock(&ah->conf_mutex);
> +
>  	cancel_delayed_work_sync(&ar->scan.timeout);
>  }

Do we really need two mutexes? I don't see any analysis about that. And
even if we do, I feel that it should be added in a separate patch.

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Re: [PATCH v2 0/2] wifi: ath12k: Introduce hw abstraction

[Kalle Valo]

Karthikeyan Periyasamy <quic_periyasa@quicinc.com> writes:

> To support multi link operation (MLO), need to move from the multi wiphy
> model to a single wiphy model. However, the single wiphy model allows
> multiple link/radio to be exposed by the same mac80211 hw. So introduce
> a new container (ath12k_hw) structure. This approach improves scalability
> for future multi link operation support.
>
> v2:
>  - Rebased on pending branch as per jeff comments
>
> Note: Raised on top of pending branch
>
> Karthikeyan Periyasamy (2):
>   wifi: ath12k: Refactor the mac80211 hw access from link/radio
>   wifi: ath12k: Introduce the container for mac80211 hw

In the pending branch I made changes to this patchset due to my changes
in the dependency patchsets:

https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=pending&id=9a0e461254022db80d13f9a4e4046280bfd2bd9c

https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=pending&id=f7f6382c4e81f1de141d687e32a0159ee1a3f11c

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Re: [PATCH v2 2/2] wifi: ath12k: Introduce the container for mac80211 hw

[Karthikeyan Periyasamy]

On 1/15/2024 9:38 PM, Kalle Valo wrote:
> Karthikeyan Periyasamy <quic_periyasa@quicinc.com> writes:
>
>> To support multi link operation, we need to combine all the link/pdev
>> under a single wiphy. This avoids the overhead of synchronization
>> across multiple hardware instances in both the cfg80211 and mac80211
>> layers. Currently, each link/pdev is registered as separate wiphy,
>> tightly coupled with link/pdev/radio (ar) structure. To enable single
>> wiphy registration within the chip, we decouple the wiphy data entity from
>> the link/pdev/radio (ar) structure and move it under the chip (ab)
>> structure with a new data container (ath12k_hw) structure. This approach
>> improves scalability for future multi link operation support.
> What about struct ath12k_pdev? Do we need it still or should it be removed?


ath12k_pdev still holds the pdev related information within the SoC/chip 
(ab). I dont want it be remove.


>
>>   static void ath12k_mac_op_cancel_hw_scan(struct ieee80211_hw *hw,
>>   					 struct ieee80211_vif *vif)
>>   {
>> -	struct ath12k *ar = hw->priv;
>> +	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
>> +	struct ath12k *ar;
>> +
>> +	mutex_lock(&ah->conf_mutex);
>> +
>> +	ar = ath12k_ah_to_ar(ah);
>>   
>>   	mutex_lock(&ar->conf_mutex);
>>   	ath12k_scan_abort(ar);
>>   	mutex_unlock(&ar->conf_mutex);
>>   
>> +	mutex_unlock(&ah->conf_mutex);
>> +
>>   	cancel_delayed_work_sync(&ar->scan.timeout);
>>   }
> Do we really need two mutexes? I don't see any analysis about that. And
> even if we do, I feel that it should be added in a separate patch.


Yes, ah->conf_mutex protect the concurrent mac80211 operation. But there 
is other places like radio/link specific synchronous operation (ie MGMT 
tx wait for the vdev deletion) is needed. To fulfill this need, we also 
need radio/link specific (ar) mutex instead of all link (ah) mutex for 
efficient lock/unlock.


Thanks,

Karthikeyan

Re: [PATCH v2 2/2] wifi: ath12k: Introduce the container for mac80211 hw

[Kalle Valo]

Karthikeyan Periyasamy <quic_periyasa@quicinc.com> writes:

>>>   static void ath12k_mac_op_cancel_hw_scan(struct ieee80211_hw *hw,
>>>   					 struct ieee80211_vif *vif)
>>>   {
>>> -	struct ath12k *ar = hw->priv;
>>> +	struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
>>> +	struct ath12k *ar;
>>> +
>>> +	mutex_lock(&ah->conf_mutex);
>>> +
>>> +	ar = ath12k_ah_to_ar(ah);
>>>     	mutex_lock(&ar->conf_mutex);
>>>   	ath12k_scan_abort(ar);
>>>   	mutex_unlock(&ar->conf_mutex);
>>>   +	mutex_unlock(&ah->conf_mutex);
>>> +
>>>   	cancel_delayed_work_sync(&ar->scan.timeout);
>>>   }
>>
>> Do we really need two mutexes? I don't see any analysis about that. And
>> even if we do, I feel that it should be added in a separate patch.
>
> Yes, ah->conf_mutex protect the concurrent mac80211 operation. But
> there is other places like radio/link specific synchronous operation
> (ie MGMT tx wait for the vdev deletion) is needed. To fulfill this
> need, we also need radio/link specific (ar) mutex instead of all link
> (ah) mutex for efficient lock/unlock.

Are there any numbers to show the inefficiency? Anyway, I consider
adding new mutexes as an optimisation which could be done in a separate
patch with proper analysis.

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