From patchwork Thu Aug 25 11:18:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manikanta Pubbisetty X-Patchwork-Id: 600255 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1C1B3C04AA5 for ; Thu, 25 Aug 2022 11:18:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240900AbiHYLSu (ORCPT ); Thu, 25 Aug 2022 07:18:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237854AbiHYLSt (ORCPT ); Thu, 25 Aug 2022 07:18:49 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 11314AEDA3 for ; Thu, 25 Aug 2022 04:18:48 -0700 (PDT) Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 27P2vcX2017117; Thu, 25 Aug 2022 11:18:41 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=zG5jvxHawmb5OK8jyGHswdT9HH2wnt69TP29blAGMmc=; b=X0fC7cJOUP3R58jRmSGy81TehSKoCfiQWHsa2edXm3pp+yC7AxetX1bArwQm/fhrwJYu JCGVLi86gqHnKve4pFLS+wvechRoJpFNsMfymdWRHCqZGJrybxQyslmLAeaItTWvkc/n jpQAiHKKBND+WGzk42jC2eJ2ml3ElC+vFn3qdBcUZZZEPWmQhygXILoN6NMzakgNDM3h ocNznza+FYiGKM2TMOVCfGVkxflknpEFlNzFsTbNOnFMGuUgfaISygPD/VaqKXDx+96h ZdEFLV8kBMiOhfsTt18dmZKp6trHekD/VeEhn89p27IGlsD3kEMhUUJGCWLShtsh9bVK yA== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3j60etsawg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Aug 2022 11:18:41 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 27PBIefK026394 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Aug 2022 11:18:40 GMT Received: from mpubbise-linux.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Thu, 25 Aug 2022 04:18:38 -0700 From: Manikanta Pubbisetty To: CC: , Manikanta Pubbisetty Subject: [PATCH v2 2/4] ath11k: Move hardware initialization logic to start() Date: Thu, 25 Aug 2022 16:48:16 +0530 Message-ID: <20220825111818.30869-3-quic_mpubbise@quicinc.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220825111818.30869-1-quic_mpubbise@quicinc.com> References: <20220825111818.30869-1-quic_mpubbise@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: ByHC8Eyd9ozYAZNaV-333TyH-SYD2eTA X-Proofpoint-ORIG-GUID: ByHC8Eyd9ozYAZNaV-333TyH-SYD2eTA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-08-25_05,2022-08-25_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 mlxscore=0 clxscore=1015 impostorscore=0 mlxlogscore=999 priorityscore=1501 bulkscore=0 adultscore=0 phishscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2208250044 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Currently during recovery, hardware is re-initialized as part of ath11k_core_reconfigure_on_crash(). In order to enable low power mode support in the driver, it is required to move the hardware re-initialization logic to ath11k_ops.start() hook. Since ath11k_ops.start() hook is called during WiFi ON/resume and also during hardware recovery, it is better to defer the hardware initialization to ath11k_ops.start() in the case of hardware recovery. This will help ensure that there is only path for the initialization of the hardware across different scenarios. A future patch will add the support of initializing the hardware from start() hook in WiFi ON/resume cases as well. Commit 38194f3a605e ("ath11k: add synchronization operation between reconfigure of mac80211 and ath11k_base") introduced a similar change that applies just to QCA6390/WCN6855 to defer the initialization of the hardware during recovery by using wait logic. This is no more needed and therefore remove it. Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.1.0.1-00887-QCAMSLSWPLZ-1 Signed-off-by: Manikanta Pubbisetty --- drivers/net/wireless/ath/ath11k/core.c | 87 +++++++++++--------------- drivers/net/wireless/ath/ath11k/core.h | 6 +- drivers/net/wireless/ath/ath11k/mac.c | 29 +++------ 3 files changed, 44 insertions(+), 78 deletions(-) diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c index c3e9e4f7bc24..8cfef7a07a65 100644 --- a/drivers/net/wireless/ath/ath11k/core.c +++ b/drivers/net/wireless/ath/ath11k/core.c @@ -1435,10 +1435,8 @@ int ath11k_core_qmi_firmware_ready(struct ath11k_base *ab) return ret; } -static int ath11k_core_reconfigure_on_crash(struct ath11k_base *ab) +static void ath11k_core_reconfigure_on_crash(struct ath11k_base *ab) { - int ret; - mutex_lock(&ab->core_lock); ath11k_thermal_unregister(ab); ath11k_hif_irq_disable(ab); @@ -1450,27 +1448,8 @@ static int ath11k_core_reconfigure_on_crash(struct ath11k_base *ab) mutex_unlock(&ab->core_lock); ath11k_dp_free(ab); - ath11k_hal_srng_deinit(ab); ab->free_vdev_map = (1LL << (ab->num_radios * TARGET_NUM_VDEVS(ab))) - 1; - - ret = ath11k_hal_srng_init(ab); - if (ret) - return ret; - - clear_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags); - - ret = ath11k_core_qmi_firmware_ready(ab); - if (ret) - goto err_hal_srng_deinit; - - clear_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags); - - return 0; - -err_hal_srng_deinit: - ath11k_hal_srng_deinit(ab); - return ret; } void ath11k_core_halt(struct ath11k *ar) @@ -1608,22 +1587,10 @@ static void ath11k_core_post_reconfigure_recovery(struct ath11k_base *ab) static void ath11k_core_restart(struct work_struct *work) { struct ath11k_base *ab = container_of(work, struct ath11k_base, restart_work); - int ret; - - if (!ab->is_reset) - ath11k_core_pre_reconfigure_recovery(ab); - - ret = ath11k_core_reconfigure_on_crash(ab); - if (ret) { - ath11k_err(ab, "failed to reconfigure driver on crash recovery\n"); - return; - } - - if (ab->is_reset) - complete_all(&ab->reconfigure_complete); - if (!ab->is_reset) - ath11k_core_post_reconfigure_recovery(ab); + ath11k_core_pre_reconfigure_recovery(ab); + ath11k_core_reconfigure_on_crash(ab); + ath11k_core_post_reconfigure_recovery(ab); } static void ath11k_core_reset(struct work_struct *work) @@ -1677,18 +1644,6 @@ static void ath11k_core_reset(struct work_struct *work) ab->is_reset = true; atomic_set(&ab->recovery_count, 0); - reinit_completion(&ab->recovery_start); - atomic_set(&ab->recovery_start_count, 0); - - ath11k_core_pre_reconfigure_recovery(ab); - - reinit_completion(&ab->reconfigure_complete); - ath11k_core_post_reconfigure_recovery(ab); - - ath11k_dbg(ab, ATH11K_DBG_BOOT, "waiting recovery start...\n"); - - time_left = wait_for_completion_timeout(&ab->recovery_start, - ATH11K_RECOVER_START_TIMEOUT_HZ); ath11k_hif_power_down(ab); ath11k_hif_power_up(ab); @@ -1796,8 +1751,6 @@ struct ath11k_base *ath11k_core_alloc(struct device *dev, size_t priv_size, spin_lock_init(&ab->base_lock); mutex_init(&ab->vdev_id_11d_lock); init_completion(&ab->reset_complete); - init_completion(&ab->reconfigure_complete); - init_completion(&ab->recovery_start); INIT_LIST_HEAD(&ab->peers); init_waitqueue_head(&ab->peer_mapping_wq); @@ -1823,5 +1776,37 @@ struct ath11k_base *ath11k_core_alloc(struct device *dev, size_t priv_size, } EXPORT_SYMBOL(ath11k_core_alloc); +int ath11k_core_start_device(struct ath11k_base *ab) +{ + int ret; + + if (!test_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags)) + return 0; + + ath11k_hal_srng_deinit(ab); + + ret = ath11k_hal_srng_init(ab); + if (ret) { + ath11k_err(ab, "failed to init srng: %d\n", ret); + return ret; + } + + clear_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags); + + ret = ath11k_core_qmi_firmware_ready(ab); + if (ret) { + ath11k_err(ab, "failed to init core: %d\n", ret); + goto err_hal_srng_deinit; + } + + clear_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags); + + return 0; + +err_hal_srng_deinit: + ath11k_hal_srng_deinit(ab); + return ret; +} + MODULE_DESCRIPTION("Core module for Qualcomm Atheros 802.11ax wireless LAN cards."); MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h index afad8f55e433..086cc127c39c 100644 --- a/drivers/net/wireless/ath/ath11k/core.h +++ b/drivers/net/wireless/ath/ath11k/core.h @@ -60,8 +60,6 @@ extern unsigned int ath11k_frame_mode; #define ATH11K_RESET_MAX_FAIL_COUNT_FIRST 3 #define ATH11K_RESET_MAX_FAIL_COUNT_FINAL 5 #define ATH11K_RESET_FAIL_TIMEOUT_HZ (20 * HZ) -#define ATH11K_RECONFIGURE_TIMEOUT_HZ (10 * HZ) -#define ATH11K_RECOVER_START_TIMEOUT_HZ (20 * HZ) enum ath11k_supported_bw { ATH11K_BW_20 = 0, @@ -913,11 +911,8 @@ struct ath11k_base { struct work_struct reset_work; atomic_t reset_count; atomic_t recovery_count; - atomic_t recovery_start_count; bool is_reset; struct completion reset_complete; - struct completion reconfigure_complete; - struct completion recovery_start; /* continuous recovery fail count */ atomic_t fail_cont_count; unsigned long reset_fail_timeout; @@ -1140,6 +1135,7 @@ int ath11k_core_check_smbios(struct ath11k_base *ab); void ath11k_core_halt(struct ath11k *ar); int ath11k_core_resume(struct ath11k_base *ab); int ath11k_core_suspend(struct ath11k_base *ab); +int ath11k_core_start_device(struct ath11k_base *ab); const struct firmware *ath11k_core_firmware_request(struct ath11k_base *ab, const char *filename); diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c index 7e91e347c9ff..56d63e9d2f1a 100644 --- a/drivers/net/wireless/ath/ath11k/mac.c +++ b/drivers/net/wireless/ath/ath11k/mac.c @@ -5696,27 +5696,6 @@ static int ath11k_mac_config_mon_status_default(struct ath11k *ar, bool enable) return ret; } -static void ath11k_mac_wait_reconfigure(struct ath11k_base *ab) -{ - int recovery_start_count; - - if (!ab->is_reset) - return; - - recovery_start_count = atomic_inc_return(&ab->recovery_start_count); - ath11k_dbg(ab, ATH11K_DBG_MAC, "recovery start count %d\n", recovery_start_count); - - if (recovery_start_count == ab->num_radios) { - complete(&ab->recovery_start); - ath11k_dbg(ab, ATH11K_DBG_MAC, "recovery started success\n"); - } - - ath11k_dbg(ab, ATH11K_DBG_MAC, "waiting reconfigure...\n"); - - wait_for_completion_timeout(&ab->reconfigure_complete, - ATH11K_RECONFIGURE_TIMEOUT_HZ); -} - static int ath11k_mac_op_start(struct ieee80211_hw *hw) { struct ath11k *ar = hw->priv; @@ -5725,6 +5704,13 @@ static int ath11k_mac_op_start(struct ieee80211_hw *hw) int ret; ath11k_mac_drain_tx(ar); + + ret = ath11k_core_start_device(ab); + if (ret) { + ath11k_err(ab, "failed to start device : %d\n", ret); + return ret; + } + mutex_lock(&ar->conf_mutex); switch (ar->state) { @@ -5733,7 +5719,6 @@ static int ath11k_mac_op_start(struct ieee80211_hw *hw) break; case ATH11K_STATE_RESTARTING: ar->state = ATH11K_STATE_RESTARTED; - ath11k_mac_wait_reconfigure(ab); break; case ATH11K_STATE_RESTARTED: case ATH11K_STATE_WEDGED: