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From: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
To: <ath12k@lists.infradead.org>
CC: <linux-wireless@vger.kernel.org>,
        Karthikeyan Periyasamy
	<quic_periyasa@quicinc.com>
Subject: [PATCH 2/4] wifi: ath12k: Refactor the MAC allocation and destroy
Date: Wed, 6 Dec 2023 09:19:18 +0530
Message-ID: <20231206034920.1037449-3-quic_periyasa@quicinc.com>
In-Reply-To: <20231206034920.1037449-1-quic_periyasa@quicinc.com>
References: <20231206034920.1037449-1-quic_periyasa@quicinc.com>
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Currently, the MAC allocation and destroy helper functions are tightly
coupled with the link/radio (ar) structure. In the future, to support
single/Multi link operations, need to refactor these helper functions
across the core and mac sub modules, so that it can be easy to scale
these functions to support single/Multi link operations.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/core.c | 33 ++++++++--
 drivers/net/wireless/ath/ath12k/mac.c  | 83 ++++++++++++++------------
 drivers/net/wireless/ath/ath12k/mac.h  |  4 +-
 3 files changed, 73 insertions(+), 47 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index 6f634b57dde8..e10c5f2cd8eb 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -529,6 +529,27 @@ static void ath12k_core_pdev_destroy(struct ath12k_base *ab)
 	ath12k_dp_pdev_free(ab);
 }
 
+static void ath12k_core_mac_destroy(struct ath12k_base *ab)
+{
+	ath12k_mac_hw_destroy(ab);
+}
+
+static int ath12k_core_mac_allocate(struct ath12k_base *ab)
+{
+	int ret;
+
+	if (test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags))
+		return 0;
+
+	ret = ath12k_mac_hw_allocate(ab);
+	if (ret)
+		return ret;
+
+	ath12k_dp_pdev_pre_alloc(ab);
+
+	return 0;
+}
+
 static int ath12k_core_start(struct ath12k_base *ab,
 			     enum ath12k_firmware_mode mode)
 {
@@ -583,7 +604,7 @@ static int ath12k_core_start(struct ath12k_base *ab,
 		goto err_hif_stop;
 	}
 
-	ret = ath12k_mac_allocate(ab);
+	ret = ath12k_core_mac_allocate(ab);
 	if (ret) {
 		ath12k_err(ab, "failed to create new hw device with mac80211 :%d\n",
 			   ret);
@@ -595,7 +616,7 @@ static int ath12k_core_start(struct ath12k_base *ab,
 	ret = ath12k_dp_rx_pdev_reo_setup(ab);
 	if (ret) {
 		ath12k_err(ab, "failed to initialize reo destination rings: %d\n", ret);
-		goto err_mac_destroy;
+		goto err_core_mac_destroy;
 	}
 
 	ret = ath12k_wmi_cmd_init(ab);
@@ -631,8 +652,8 @@ static int ath12k_core_start(struct ath12k_base *ab,
 
 err_reo_cleanup:
 	ath12k_dp_rx_pdev_reo_cleanup(ab);
-err_mac_destroy:
-	ath12k_mac_destroy(ab);
+err_core_mac_destroy:
+	ath12k_core_mac_destroy(ab);
 err_hif_stop:
 	ath12k_hif_stop(ab);
 err_wmi_detach:
@@ -707,7 +728,7 @@ int ath12k_core_qmi_firmware_ready(struct ath12k_base *ab)
 	ath12k_core_pdev_destroy(ab);
 err_core_stop:
 	ath12k_core_stop(ab);
-	ath12k_mac_destroy(ab);
+	ath12k_core_mac_destroy(ab);
 err_dp_free:
 	ath12k_dp_free(ab);
 	mutex_unlock(&ab->core_lock);
@@ -1003,7 +1024,7 @@ void ath12k_core_deinit(struct ath12k_base *ab)
 	mutex_unlock(&ab->core_lock);
 
 	ath12k_hif_power_down(ab);
-	ath12k_mac_destroy(ab);
+	ath12k_core_mac_destroy(ab);
 	ath12k_core_soc_destroy(ab);
 }
 
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 49d56f5d8896..a110119ad701 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -7607,7 +7607,47 @@ int ath12k_mac_register(struct ath12k_base *ab)
 	return ret;
 }
 
-int ath12k_mac_allocate(struct ath12k_base *ab)
+static void ath12k_mac_setup(struct ath12k *ar)
+{
+	struct ath12k_base *ab = ar->ab;
+	struct ath12k_pdev *pdev = ar->pdev;
+	u8 pdev_idx = ar->pdev_idx;
+
+	ar->lmac_id = ath12k_hw_get_mac_from_pdev_id(ab->hw_params, pdev_idx);
+
+	ar->wmi = &ab->wmi_ab.wmi[pdev_idx];
+	/* FIXME: wmi[0] is already initialized during attach,
+	 * Should we do this again?
+	 */
+	ath12k_wmi_pdev_attach(ab, pdev_idx);
+
+	ar->cfg_tx_chainmask = pdev->cap.tx_chain_mask;
+	ar->cfg_rx_chainmask = pdev->cap.rx_chain_mask;
+	ar->num_tx_chains = hweight32(pdev->cap.tx_chain_mask);
+	ar->num_rx_chains = hweight32(pdev->cap.rx_chain_mask);
+
+	spin_lock_init(&ar->data_lock);
+	INIT_LIST_HEAD(&ar->arvifs);
+	INIT_LIST_HEAD(&ar->ppdu_stats_info);
+	mutex_init(&ar->conf_mutex);
+	init_completion(&ar->vdev_setup_done);
+	init_completion(&ar->vdev_delete_done);
+	init_completion(&ar->peer_assoc_done);
+	init_completion(&ar->peer_delete_done);
+	init_completion(&ar->install_key_done);
+	init_completion(&ar->bss_survey_done);
+	init_completion(&ar->scan.started);
+	init_completion(&ar->scan.completed);
+
+	INIT_DELAYED_WORK(&ar->scan.timeout, ath12k_scan_timeout_work);
+	INIT_WORK(&ar->regd_update_work, ath12k_regd_update_work);
+
+	INIT_WORK(&ar->wmi_mgmt_tx_work, ath12k_mgmt_over_wmi_tx_work);
+	skb_queue_head_init(&ar->wmi_mgmt_tx_queue);
+	clear_bit(ATH12K_FLAG_MONITOR_ENABLED, &ar->monitor_flags);
+}
+
+int ath12k_mac_hw_allocate(struct ath12k_base *ab)
 {
 	struct ieee80211_hw *hw;
 	struct ath12k *ar;
@@ -7615,9 +7655,6 @@ int ath12k_mac_allocate(struct ath12k_base *ab)
 	int ret;
 	int i;
 
-	if (test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags))
-		return 0;
-
 	for (i = 0; i < ab->num_radios; i++) {
 		pdev = &ab->pdevs[i];
 		hw = ieee80211_alloc_hw(sizeof(struct ath12k), &ath12k_ops);
@@ -7632,52 +7669,20 @@ int ath12k_mac_allocate(struct ath12k_base *ab)
 		ar->ab = ab;
 		ar->pdev = pdev;
 		ar->pdev_idx = i;
-		ar->lmac_id = ath12k_hw_get_mac_from_pdev_id(ab->hw_params, i);
-
-		ar->wmi = &ab->wmi_ab.wmi[i];
-		/* FIXME: wmi[0] is already initialized during attach,
-		 * Should we do this again?
-		 */
-		ath12k_wmi_pdev_attach(ab, i);
-
-		ar->cfg_tx_chainmask = pdev->cap.tx_chain_mask;
-		ar->cfg_rx_chainmask = pdev->cap.rx_chain_mask;
-		ar->num_tx_chains = hweight32(pdev->cap.tx_chain_mask);
-		ar->num_rx_chains = hweight32(pdev->cap.rx_chain_mask);
-
 		pdev->ar = ar;
-		spin_lock_init(&ar->data_lock);
-		INIT_LIST_HEAD(&ar->arvifs);
-		INIT_LIST_HEAD(&ar->ppdu_stats_info);
-		mutex_init(&ar->conf_mutex);
-		init_completion(&ar->vdev_setup_done);
-		init_completion(&ar->vdev_delete_done);
-		init_completion(&ar->peer_assoc_done);
-		init_completion(&ar->peer_delete_done);
-		init_completion(&ar->install_key_done);
-		init_completion(&ar->bss_survey_done);
-		init_completion(&ar->scan.started);
-		init_completion(&ar->scan.completed);
 
-		INIT_DELAYED_WORK(&ar->scan.timeout, ath12k_scan_timeout_work);
-		INIT_WORK(&ar->regd_update_work, ath12k_regd_update_work);
-
-		INIT_WORK(&ar->wmi_mgmt_tx_work, ath12k_mgmt_over_wmi_tx_work);
-		skb_queue_head_init(&ar->wmi_mgmt_tx_queue);
-		clear_bit(ATH12K_FLAG_MONITOR_ENABLED, &ar->monitor_flags);
+		ath12k_mac_setup(ar);
 	}
 
-	ath12k_dp_pdev_pre_alloc(ab);
-
 	return 0;
 
 err_free_mac:
-	ath12k_mac_destroy(ab);
+	ath12k_mac_hw_destroy(ab);
 
 	return ret;
 }
 
-void ath12k_mac_destroy(struct ath12k_base *ab)
+void ath12k_mac_hw_destroy(struct ath12k_base *ab)
 {
 	struct ath12k *ar;
 	struct ath12k_pdev *pdev;
diff --git a/drivers/net/wireless/ath/ath12k/mac.h b/drivers/net/wireless/ath/ath12k/mac.h
index 7c63bb628adc..fb4c0662581b 100644
--- a/drivers/net/wireless/ath/ath12k/mac.h
+++ b/drivers/net/wireless/ath/ath12k/mac.h
@@ -48,10 +48,10 @@ enum ath12k_supported_bw {
 
 extern const struct htt_rx_ring_tlv_filter ath12k_mac_mon_status_filter_default;
 
-void ath12k_mac_destroy(struct ath12k_base *ab);
+void ath12k_mac_hw_destroy(struct ath12k_base *ab);
 void ath12k_mac_unregister(struct ath12k_base *ab);
 int ath12k_mac_register(struct ath12k_base *ab);
-int ath12k_mac_allocate(struct ath12k_base *ab);
+int ath12k_mac_hw_allocate(struct ath12k_base *ab);
 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,
-- 
2.34.1