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From:   Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
To:     <ath11k@lists.infradead.org>
CC:     <linux-wireless@vger.kernel.org>,
        Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
Subject: [PATCH v3 11/12] ath11k: Update WBM idle ring HP after FW mode on
Date:   Mon, 28 Mar 2022 11:39:36 +0530
Message-ID: <20220328060937.16738-12-quic_mpubbise@quicinc.com>
In-Reply-To: <20220328060937.16738-1-quic_mpubbise@quicinc.com>
References: <20220328060937.16738-1-quic_mpubbise@quicinc.com>
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Currently, WBM idle ring HP is updated much before the shadow
configuration is sent to the FW. Any update to the shadow
registers before FW mode on request would not be reflected
on to the actual HW registers failing to bring up the device.
Send FW mode ON QMI request before WBM idle ring HP update
to fix this problem.

Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.1.0.1-00573-QCAMSLSWPLZ-1
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01720.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.5.0.1-01100-QCAHKSWPL_SILICONZ-1
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-00192-QCAHKSWPL_SILICONZ-1

Signed-off-by: Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
---
 drivers/net/wireless/ath/ath11k/ce.c   |  4 +--
 drivers/net/wireless/ath/ath11k/core.c | 45 ++++++++++++++++++--------
 2 files changed, 32 insertions(+), 17 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/ce.c b/drivers/net/wireless/ath/ath11k/ce.c
index aaa7b05ff49d..c14c51f38709 100644
--- a/drivers/net/wireless/ath/ath11k/ce.c
+++ b/drivers/net/wireless/ath/ath11k/ce.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021, Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include "dp_rx.h"
@@ -918,9 +919,6 @@ int ath11k_ce_init_pipes(struct ath11k_base *ab)
 	int i;
 	int ret;
 
-	ath11k_ce_get_shadow_config(ab, &ab->qmi.ce_cfg.shadow_reg_v2,
-				    &ab->qmi.ce_cfg.shadow_reg_v2_len);
-
 	for (i = 0; i < ab->hw_params.ce_count; i++) {
 		pipe = &ab->ce.ce_pipe[i];
 
diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
index d9a06629651c..892be9ba33ef 100644
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -1160,21 +1160,14 @@ static void ath11k_core_pdev_destroy(struct ath11k_base *ab)
 	ath11k_debugfs_pdev_destroy(ab);
 }
 
-static int ath11k_core_start(struct ath11k_base *ab,
-			     enum ath11k_firmware_mode mode)
+static int ath11k_core_start(struct ath11k_base *ab)
 {
 	int ret;
 
-	ret = ath11k_qmi_firmware_start(ab, mode);
-	if (ret) {
-		ath11k_err(ab, "failed to attach wmi: %d\n", ret);
-		return ret;
-	}
-
 	ret = ath11k_wmi_attach(ab);
 	if (ret) {
 		ath11k_err(ab, "failed to attach wmi: %d\n", ret);
-		goto err_firmware_stop;
+		return ret;
 	}
 
 	ret = ath11k_htc_init(ab);
@@ -1274,8 +1267,23 @@ static int ath11k_core_start(struct ath11k_base *ab,
 	ath11k_hif_stop(ab);
 err_wmi_detach:
 	ath11k_wmi_detach(ab);
-err_firmware_stop:
-	ath11k_qmi_firmware_stop(ab);
+
+	return ret;
+}
+
+static int ath11k_core_start_firmware(struct ath11k_base *ab,
+				      enum ath11k_firmware_mode mode)
+{
+	int ret;
+
+	ath11k_ce_get_shadow_config(ab, &ab->qmi.ce_cfg.shadow_reg_v2,
+				    &ab->qmi.ce_cfg.shadow_reg_v2_len);
+
+	ret = ath11k_qmi_firmware_start(ab, mode);
+	if (ret) {
+		ath11k_err(ab, "failed to send firmware start: %d\n", ret);
+		return ret;
+	}
 
 	return ret;
 }
@@ -1305,16 +1313,22 @@ int ath11k_core_qmi_firmware_ready(struct ath11k_base *ab)
 {
 	int ret;
 
+	ret = ath11k_core_start_firmware(ab, ATH11K_FIRMWARE_MODE_NORMAL);
+	if (ret) {
+		ath11k_err(ab, "failed to start firmware: %d\n", ret);
+		return ret;
+	}
+
 	ret = ath11k_ce_init_pipes(ab);
 	if (ret) {
 		ath11k_err(ab, "failed to initialize CE: %d\n", ret);
-		return ret;
+		goto err_firmware_stop;
 	}
 
 	ret = ath11k_dp_alloc(ab);
 	if (ret) {
 		ath11k_err(ab, "failed to init DP: %d\n", ret);
-		return ret;
+		goto err_firmware_stop;
 	}
 
 	switch (ath11k_crypto_mode) {
@@ -1335,7 +1349,7 @@ int ath11k_core_qmi_firmware_ready(struct ath11k_base *ab)
 		set_bit(ATH11K_FLAG_RAW_MODE, &ab->dev_flags);
 
 	mutex_lock(&ab->core_lock);
-	ret = ath11k_core_start(ab, ATH11K_FIRMWARE_MODE_NORMAL);
+	ret = ath11k_core_start(ab);
 	if (ret) {
 		ath11k_err(ab, "failed to start core: %d\n", ret);
 		goto err_dp_free;
@@ -1364,6 +1378,9 @@ int ath11k_core_qmi_firmware_ready(struct ath11k_base *ab)
 err_dp_free:
 	ath11k_dp_free(ab);
 	mutex_unlock(&ab->core_lock);
+err_firmware_stop:
+	ath11k_qmi_firmware_stop(ab);
+
 	return ret;
 }
 
-- 
2.35.1