From patchwork Fri Jan 21 07:08:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ping-Ke Shih X-Patchwork-Id: 12719351 X-Patchwork-Delegate: kvalo@adurom.com 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 73D70C433FE for ; Fri, 21 Jan 2022 07:08:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1378845AbiAUHI4 (ORCPT ); Fri, 21 Jan 2022 02:08:56 -0500 Received: from rtits2.realtek.com ([211.75.126.72]:44459 "EHLO rtits2.realtek.com.tw" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1378844AbiAUHI4 (ORCPT ); Fri, 21 Jan 2022 02:08:56 -0500 Authenticated-By: X-SpamFilter-By: ArmorX SpamTrap 5.73 with qID 20L78lBsA022419, This message is accepted by code: ctloc85258 Received: from mail.realtek.com (rtexh36505.realtek.com.tw[172.21.6.25]) by rtits2.realtek.com.tw (8.15.2/2.71/5.88) with ESMTPS id 20L78lBsA022419 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Fri, 21 Jan 2022 15:08:47 +0800 Received: from RTEXMBS04.realtek.com.tw (172.21.6.97) by RTEXH36505.realtek.com.tw (172.21.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Fri, 21 Jan 2022 15:08:47 +0800 Received: from localhost (172.21.69.188) by RTEXMBS04.realtek.com.tw (172.21.6.97) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Fri, 21 Jan 2022 15:08:46 +0800 From: Ping-Ke Shih To: , CC: , , Subject: [PATCH 2/3] rtw88: fix idle mode flow for hw scan Date: Fri, 21 Jan 2022 15:08:12 +0800 Message-ID: <20220121070813.9656-3-pkshih@realtek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220121070813.9656-1-pkshih@realtek.com> References: <20220121070813.9656-1-pkshih@realtek.com> MIME-Version: 1.0 X-Originating-IP: [172.21.69.188] X-ClientProxiedBy: RTEXMBS02.realtek.com.tw (172.21.6.95) To RTEXMBS04.realtek.com.tw (172.21.6.97) X-KSE-ServerInfo: RTEXMBS04.realtek.com.tw, 9 X-KSE-AntiSpam-Interceptor-Info: trusted connection X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Deterministic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 01/21/2022 06:52:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: =?big5_tw?b?Q2xlYW4sIGJhc2VzOiAyMDIyLzEvMjEgpFekyCAwNjow?= =?big5_tw?b?MDowMA==?= X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled X-KSE-ServerInfo: RTEXH36505.realtek.com.tw, 9 X-KSE-Attachment-Filter-Triggered-Rules: Clean X-KSE-Attachment-Filter-Triggered-Filters: Clean X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Po-Hao Huang Upon hw scan completion, idle mode is not re-entered. This might increase power consumption under no link mode. Fix this by adding the re-enter flow. We need another work for this since enter_ips waits for c2h_work to finish, which might lead to deadlock if caller is in the same work. Fixes: 10d162b2ed39 ("rtw88: 8822c: add ieee80211_ops::hw_scan") Signed-off-by: Po-Hao Huang Signed-off-by: Ping-Ke Shih --- drivers/net/wireless/realtek/rtw88/fw.c | 2 +- drivers/net/wireless/realtek/rtw88/mac80211.c | 5 ++++- drivers/net/wireless/realtek/rtw88/main.c | 16 +++++++++++++++- drivers/net/wireless/realtek/rtw88/main.h | 4 +++- 4 files changed, 23 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c index b56dc43229d28..a631042753eab 100644 --- a/drivers/net/wireless/realtek/rtw88/fw.c +++ b/drivers/net/wireless/realtek/rtw88/fw.c @@ -2030,7 +2030,7 @@ void rtw_hw_scan_complete(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, rtwdev->hal.rcr |= BIT_CBSSID_BCN; rtw_write32(rtwdev, REG_RCR, rtwdev->hal.rcr); - rtw_core_scan_complete(rtwdev, vif); + rtw_core_scan_complete(rtwdev, vif, true); ieee80211_wake_queues(rtwdev->hw); ieee80211_scan_completed(rtwdev->hw, &info); diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c index ae7d97de5fdf4..647d2662955ba 100644 --- a/drivers/net/wireless/realtek/rtw88/mac80211.c +++ b/drivers/net/wireless/realtek/rtw88/mac80211.c @@ -72,6 +72,9 @@ static int rtw_ops_config(struct ieee80211_hw *hw, u32 changed) struct rtw_dev *rtwdev = hw->priv; int ret = 0; + /* let previous ips work finish to ensure we don't leave ips twice */ + cancel_work_sync(&rtwdev->ips_work); + mutex_lock(&rtwdev->mutex); rtw_leave_lps_deep(rtwdev); @@ -614,7 +617,7 @@ static void rtw_ops_sw_scan_complete(struct ieee80211_hw *hw, struct rtw_dev *rtwdev = hw->priv; mutex_lock(&rtwdev->mutex); - rtw_core_scan_complete(rtwdev, vif); + rtw_core_scan_complete(rtwdev, vif, false); mutex_unlock(&rtwdev->mutex); } diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c index 38252113c4a87..39c223a2e3e2d 100644 --- a/drivers/net/wireless/realtek/rtw88/main.c +++ b/drivers/net/wireless/realtek/rtw88/main.c @@ -272,6 +272,15 @@ static void rtw_c2h_work(struct work_struct *work) } } +static void rtw_ips_work(struct work_struct *work) +{ + struct rtw_dev *rtwdev = container_of(work, struct rtw_dev, ips_work); + + mutex_lock(&rtwdev->mutex); + rtw_enter_ips(rtwdev); + mutex_unlock(&rtwdev->mutex); +} + static u8 rtw_acquire_macid(struct rtw_dev *rtwdev) { unsigned long mac_id; @@ -1339,7 +1348,8 @@ void rtw_core_scan_start(struct rtw_dev *rtwdev, struct rtw_vif *rtwvif, set_bit(RTW_FLAG_SCANNING, rtwdev->flags); } -void rtw_core_scan_complete(struct rtw_dev *rtwdev, struct ieee80211_vif *vif) +void rtw_core_scan_complete(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, + bool hw_scan) { struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv; u32 config = 0; @@ -1354,6 +1364,9 @@ void rtw_core_scan_complete(struct rtw_dev *rtwdev, struct ieee80211_vif *vif) rtw_vif_port_config(rtwdev, rtwvif, config); rtw_coex_scan_notify(rtwdev, COEX_SCAN_FINISH); + + if (rtwvif->net_type == RTW_NET_NO_LINK && hw_scan) + ieee80211_queue_work(rtwdev->hw, &rtwdev->ips_work); } int rtw_core_start(struct rtw_dev *rtwdev) @@ -1919,6 +1932,7 @@ int rtw_core_init(struct rtw_dev *rtwdev) INIT_DELAYED_WORK(&coex->wl_ccklock_work, rtw_coex_wl_ccklock_work); INIT_WORK(&rtwdev->tx_work, rtw_tx_work); INIT_WORK(&rtwdev->c2h_work, rtw_c2h_work); + INIT_WORK(&rtwdev->ips_work, rtw_ips_work); INIT_WORK(&rtwdev->fw_recovery_work, rtw_fw_recovery_work); INIT_WORK(&rtwdev->ba_work, rtw_txq_ba_work); skb_queue_head_init(&rtwdev->c2h_queue); diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h index dc1cd9bd4b8a3..36e1e408933db 100644 --- a/drivers/net/wireless/realtek/rtw88/main.h +++ b/drivers/net/wireless/realtek/rtw88/main.h @@ -1960,6 +1960,7 @@ struct rtw_dev { /* c2h cmd queue & handler work */ struct sk_buff_head c2h_queue; struct work_struct c2h_work; + struct work_struct ips_work; struct work_struct fw_recovery_work; /* used to protect txqs list */ @@ -2101,7 +2102,8 @@ void rtw_tx_report_purge_timer(struct timer_list *t); void rtw_update_sta_info(struct rtw_dev *rtwdev, struct rtw_sta_info *si); void rtw_core_scan_start(struct rtw_dev *rtwdev, struct rtw_vif *rtwvif, const u8 *mac_addr, bool hw_scan); -void rtw_core_scan_complete(struct rtw_dev *rtwdev, struct ieee80211_vif *vif); +void rtw_core_scan_complete(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, + bool hw_scan); int rtw_core_start(struct rtw_dev *rtwdev); void rtw_core_stop(struct rtw_dev *rtwdev); int rtw_chip_info_setup(struct rtw_dev *rtwdev);