From:   Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
To:     <ath11k@lists.infradead.org>
CC:     <linux-wireless@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <robh@kernel.org>, Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
Subject: [PATCH 16/19] ath11k: Update WBM idle ring HP after FW mode on
Date:   Wed, 24 Nov 2021 00:20:31 +0530
Message-ID: <1637693434-15462-17-git-send-email-quic_mpubbise@quicinc.com>
In-Reply-To: <1637693434-15462-1-git-send-email-quic_mpubbise@quicinc.com>
References: <1637693434-15462-1-git-send-email-quic_mpubbise@quicinc.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

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 | 46 +++++++++++++++++++++++-----------
 2 files changed, 33 insertions(+), 17 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/ce.c b/drivers/net/wireless/ath/ath11k/ce.c
index aaa7b05..c14c51f 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 d9cc58a..d65cc65 100644
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -938,21 +938,14 @@ 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);
@@ -1052,8 +1045,23 @@ 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;
 }
@@ -1062,16 +1070,22 @@ 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) {
@@ -1092,7 +1106,7 @@ 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;
@@ -1103,6 +1117,7 @@ int ath11k_core_qmi_firmware_ready(struct ath11k_base *ab)
 		ath11k_err(ab, "failed to create pdev core: %d\n", ret);
 		goto err_core_stop;
 	}
+
 	ath11k_hif_irq_enable(ab);
 	mutex_unlock(&ab->core_lock);
 
@@ -1114,6 +1129,9 @@ 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;
 }
 
-- 
2.7.4