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From: Harshitha Prem <quic_hprem@quicinc.com>
To: ath12k@lists.infradead.org
Cc: linux-wireless@vger.kernel.org,
        Karthikeyan Periyasamy <quic_periyasa@quicinc.com>,
        Harshitha Prem <quic_hprem@quicinc.com>
Subject: [PATCH v2 1/8] wifi: ath12k: Refactor core start api
Date: Thu, 25 Apr 2024 11:27:52 +0530
Message-Id: <20240425055759.1181165-2-quic_hprem@quicinc.com>
In-Reply-To: <20240425055759.1181165-1-quic_hprem@quicinc.com>
References: <20240425055759.1181165-1-quic_hprem@quicinc.com>
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From: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>

Hardware device group abstraction would be introduced, in future,
where radios across different devices can be grouped together to
support multi-link operation and register as a device group to mac80211.

Currently, ath12k_mac_allocate() and ath12k_mac_register() APIs are part
of ath12k_core_start() and ath12k_core_pdev_create() respectively and are
based on per device (ath12k_base). These APIs can be decoupled and moved
out to ath12k_core_qmi_firmware_ready() itself.

This refactor would be helpful for device group abstraction when mac80211
allocate and register will be changed from per device (ath12k_base) to
per device group (ath12k_hw_group).

Add changes to move allocate and register APIs from existing one and modify
corresponding deinit sequence.

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

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Signed-off-by: Harshitha Prem <quic_hprem@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/core.c | 64 +++++++++++++-------------
 1 file changed, 31 insertions(+), 33 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index e9aabdb9341c..63f0ba7bb57d 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -563,14 +563,15 @@ u32 ath12k_core_get_max_num_tids(struct ath12k_base *ab)
 
 static void ath12k_core_stop(struct ath12k_base *ab)
 {
-	if (!test_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags))
-		ath12k_qmi_firmware_stop(ab);
-
 	ath12k_acpi_stop(ab);
 
+	ath12k_dp_rx_pdev_reo_cleanup(ab);
 	ath12k_hif_stop(ab);
 	ath12k_wmi_detach(ab);
-	ath12k_dp_rx_pdev_reo_cleanup(ab);
+	ath12k_dp_free(ab);
+
+	if (!test_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags))
+		ath12k_qmi_firmware_stop(ab);
 
 	/* De-Init of components as needed */
 }
@@ -672,7 +673,7 @@ static int ath12k_core_soc_create(struct ath12k_base *ab)
 
 static void ath12k_core_soc_destroy(struct ath12k_base *ab)
 {
-	ath12k_dp_free(ab);
+	ath12k_hif_power_down(ab, false);
 	ath12k_reg_free(ab);
 	ath12k_debugfs_soc_destroy(ab);
 	ath12k_qmi_deinit_service(ab);
@@ -682,30 +683,17 @@ static int ath12k_core_pdev_create(struct ath12k_base *ab)
 {
 	int ret;
 
-	ret = ath12k_mac_register(ab);
-	if (ret) {
-		ath12k_err(ab, "failed register the radio with mac80211: %d\n", ret);
-		return ret;
-	}
-
 	ret = ath12k_dp_pdev_alloc(ab);
 	if (ret) {
 		ath12k_err(ab, "failed to attach DP pdev: %d\n", ret);
-		goto err_mac_unregister;
+		return ret;
 	}
 
 	return 0;
-
-err_mac_unregister:
-	ath12k_mac_unregister(ab);
-
-	return ret;
 }
 
 static void ath12k_core_pdev_destroy(struct ath12k_base *ab)
 {
-	ath12k_mac_unregister(ab);
-	ath12k_hif_irq_disable(ab);
 	ath12k_dp_pdev_free(ab);
 }
 
@@ -763,19 +751,12 @@ static int ath12k_core_start(struct ath12k_base *ab,
 		goto err_hif_stop;
 	}
 
-	ret = ath12k_mac_allocate(ab);
-	if (ret) {
-		ath12k_err(ab, "failed to create new hw device with mac80211 :%d\n",
-			   ret);
-		goto err_hif_stop;
-	}
-
 	ath12k_dp_cc_config(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_hif_stop;
 	}
 
 	ath12k_dp_hal_rx_desc_init(ab);
@@ -818,8 +799,6 @@ 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_hif_stop:
 	ath12k_hif_stop(ab);
 err_wmi_detach:
@@ -873,11 +852,25 @@ int ath12k_core_qmi_firmware_ready(struct ath12k_base *ab)
 		goto err_dp_free;
 	}
 
+	ret = ath12k_mac_allocate(ab);
+	if (ret) {
+		ath12k_err(ab, "failed to create new hw device with mac80211 :%d\n",
+			   ret);
+		goto err_core_stop;
+	}
+
+	ret = ath12k_mac_register(ab);
+	if (ret) {
+		ath12k_err(ab, "failed register the radio with mac80211: %d\n", ret);
+		goto err_mac_destroy;
+	}
+
 	ret = ath12k_core_pdev_create(ab);
 	if (ret) {
 		ath12k_err(ab, "failed to create pdev core: %d\n", ret);
-		goto err_core_stop;
+		goto err_mac_unregister;
 	}
+
 	ath12k_hif_irq_enable(ab);
 
 	ret = ath12k_core_rfkill_config(ab);
@@ -891,10 +884,14 @@ int ath12k_core_qmi_firmware_ready(struct ath12k_base *ab)
 	return 0;
 
 err_core_pdev_destroy:
+	ath12k_hif_irq_disable(ab);
 	ath12k_core_pdev_destroy(ab);
+err_mac_unregister:
+	ath12k_mac_unregister(ab);
+err_mac_destroy:
+	ath12k_mac_destroy(ab);
 err_core_stop:
 	ath12k_core_stop(ab);
-	ath12k_mac_destroy(ab);
 err_dp_free:
 	ath12k_dp_free(ab);
 	mutex_unlock(&ab->core_lock);
@@ -1208,13 +1205,14 @@ void ath12k_core_deinit(struct ath12k_base *ab)
 {
 	mutex_lock(&ab->core_lock);
 
+	ath12k_hif_irq_disable(ab);
 	ath12k_core_pdev_destroy(ab);
+	ath12k_mac_unregister(ab);
+	ath12k_mac_destroy(ab);
 	ath12k_core_stop(ab);
 
 	mutex_unlock(&ab->core_lock);
 
-	ath12k_hif_power_down(ab, false);
-	ath12k_mac_destroy(ab);
 	ath12k_core_soc_destroy(ab);
 	ath12k_fw_unmap(ab);
 }
-- 
2.34.1