From patchwork Fri Jun 2 15:21:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shayne Chen X-Patchwork-Id: 689026 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 97D79C7EE32 for ; Fri, 2 Jun 2023 15:22:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236205AbjFBPWJ (ORCPT ); Fri, 2 Jun 2023 11:22:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236366AbjFBPWD (ORCPT ); Fri, 2 Jun 2023 11:22:03 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 86C2C1BB for ; Fri, 2 Jun 2023 08:22:01 -0700 (PDT) X-UUID: 3368560a015911eeb20a276fd37b9834-20230602 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=o/zl9/sAL/WSYQIUSpW5rr1GSMVilykdjXQeyrImSkE=; b=t4NY04PIA0gjujoSRrqOKRINGbkEGg09j3LCSZ47ja6mAahMCF8HYhHjVYl3WSEwdJ8d4nyyFuDztFg4tF1htBr9qvDc98+EicBMmAd98SWGSOHuReFNbhf8UHUu9wPHcdKxvPq6+rDeBV2CLAYe1fvcQJrtrDxB0kZKj119NPo=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.25, REQID:ba93c305-d535-4813-8dc4-f96578a54842, IP:0, U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:d5b0ae3, CLOUDID:0d1c363d-de1e-4348-bc35-c96f92f1dcbb, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-UUID: 3368560a015911eeb20a276fd37b9834-20230602 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 129877604; Fri, 02 Jun 2023 23:21:52 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.194) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Fri, 2 Jun 2023 23:21:51 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Fri, 2 Jun 2023 23:21:51 +0800 From: Shayne Chen To: Felix Fietkau CC: linux-wireless , Lorenzo Bianconi , Ryder Lee , Evelyn Tsai , Bo Jiao , linux-mediatek , Peter Chiu , Shayne Chen Subject: [PATCH 08/12] wifi: mt76: mt7996: set ifs time by mcu command Date: Fri, 2 Jun 2023 23:21:04 +0800 Message-ID: <20230602152108.26860-8-shayne.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230602152108.26860-1-shayne.chen@mediatek.com> References: <20230602152108.26860-1-shayne.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Peter Chiu There's a race between driver and fw on some tx/rx control registers when setting ifs, which will cause accidental hw queue pause problems. Avoid this by setting ifs time with bss_info mcu command. Reviewed-by: Shayne Chen Signed-off-by: Peter Chiu Signed-off-by: Shayne Chen --- .../net/wireless/mediatek/mt76/mt7996/mac.c | 27 +---------- .../net/wireless/mediatek/mt76/mt7996/main.c | 5 +- .../net/wireless/mediatek/mt76/mt7996/mcu.c | 47 +++++++++++++++++++ .../net/wireless/mediatek/mt76/mt7996/mcu.h | 17 +++++++ .../wireless/mediatek/mt76/mt7996/mt7996.h | 3 +- 5 files changed, 70 insertions(+), 29 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c index 130eb7b4fd91..78d9127e63ab 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c @@ -1604,20 +1604,19 @@ void mt7996_mac_reset_counters(struct mt7996_phy *phy) mt7996_mcu_get_chan_mib_info(phy, true); } -void mt7996_mac_set_timing(struct mt7996_phy *phy) +void mt7996_mac_set_coverage_class(struct mt7996_phy *phy) { s16 coverage_class = phy->coverage_class; struct mt7996_dev *dev = phy->dev; struct mt7996_phy *phy2 = mt7996_phy2(dev); struct mt7996_phy *phy3 = mt7996_phy3(dev); - u32 val, reg_offset; + u32 reg_offset; u32 cck = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 231) | FIELD_PREP(MT_TIMEOUT_VAL_CCA, 48); u32 ofdm = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 60) | FIELD_PREP(MT_TIMEOUT_VAL_CCA, 28); u8 band_idx = phy->mt76->band_idx; int offset; - bool a_band = !(phy->mt76->chandef.chan->band == NL80211_BAND_2GHZ); if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state)) return; @@ -1630,34 +1629,12 @@ void mt7996_mac_set_timing(struct mt7996_phy *phy) coverage_class = max_t(s16, coverage_class, phy3->coverage_class); - mt76_set(dev, MT_ARB_SCR(band_idx), - MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE); - udelay(1); - offset = 3 * coverage_class; reg_offset = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, offset) | FIELD_PREP(MT_TIMEOUT_VAL_CCA, offset); mt76_wr(dev, MT_TMAC_CDTR(band_idx), cck + reg_offset); mt76_wr(dev, MT_TMAC_ODTR(band_idx), ofdm + reg_offset); - mt76_wr(dev, MT_TMAC_ICR0(band_idx), - FIELD_PREP(MT_IFS_EIFS_OFDM, a_band ? 84 : 78) | - FIELD_PREP(MT_IFS_RIFS, 2) | - FIELD_PREP(MT_IFS_SIFS, 10) | - FIELD_PREP(MT_IFS_SLOT, phy->slottime)); - - if (!a_band) - mt76_wr(dev, MT_TMAC_ICR1(band_idx), - FIELD_PREP(MT_IFS_EIFS_CCK, 314)); - - if (phy->slottime < 20 || a_band) - val = MT7996_CFEND_RATE_DEFAULT; - else - val = MT7996_CFEND_RATE_11B; - - mt76_rmw_field(dev, MT_RATE_HRCR0(band_idx), MT_RATE_HRCR0_CFEND_RATE, val); - mt76_clear(dev, MT_ARB_SCR(band_idx), - MT_ARB_SCR_TX_DISABLE | MT_ARB_SCR_RX_DISABLE); } void mt7996_mac_enable_nf(struct mt7996_dev *dev, u8 band) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/main.c b/drivers/net/wireless/mediatek/mt76/mt7996/main.c index 8a1edc5c1288..6001b534b657 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/main.c @@ -287,7 +287,6 @@ int mt7996_set_channel(struct mt7996_phy *phy) if (ret) goto out; - mt7996_mac_set_timing(phy); ret = mt7996_dfs_init_radar_detector(phy); mt7996_mac_cca_stats_reset(phy); @@ -565,7 +564,7 @@ static void mt7996_bss_info_changed(struct ieee80211_hw *hw, if (slottime != phy->slottime) { phy->slottime = slottime; - mt7996_mac_set_timing(phy); + mt7996_mcu_set_timing(phy, vif); } } @@ -905,7 +904,7 @@ mt7996_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class) mutex_lock(&dev->mt76.mutex); phy->coverage_class = max_t(s16, coverage_class, 0); - mt7996_mac_set_timing(phy); + mt7996_mac_set_coverage_class(phy); mutex_unlock(&dev->mt76.mutex); } diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c index db51b3023654..52c6c502e9b3 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c @@ -701,6 +701,35 @@ mt7996_mcu_muar_config(struct mt7996_phy *phy, struct ieee80211_vif *vif, sizeof(req), true); } +static void +mt7996_mcu_bss_ifs_timing_tlv(struct sk_buff *skb, struct ieee80211_vif *vif) +{ + struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv; + struct mt7996_phy *phy = mvif->phy; + struct bss_ifs_time_tlv *ifs_time; + struct tlv *tlv; + bool a_band = !(phy->mt76->chandef.chan->band == NL80211_BAND_2GHZ); + u16 eifs_time = a_band ? 84 : 78; + + tlv = mt7996_mcu_add_uni_tlv(skb, UNI_BSS_INFO_IFS_TIME, sizeof(*ifs_time)); + + ifs_time = (struct bss_ifs_time_tlv *)tlv; + ifs_time->slot_valid = true; + ifs_time->sifs_valid = true; + ifs_time->rifs_valid = true; + ifs_time->eifs_valid = true; + + ifs_time->slot_time = cpu_to_le16(phy->slottime); + ifs_time->sifs_time = cpu_to_le16(10); + ifs_time->rifs_time = cpu_to_le16(2); + ifs_time->eifs_time = cpu_to_le16(eifs_time); + + if (!a_band) { + ifs_time->eifs_cck_valid = true; + ifs_time->eifs_cck_time = cpu_to_le16(314); + } +} + static int mt7996_mcu_bss_basic_tlv(struct sk_buff *skb, struct ieee80211_vif *vif, @@ -826,6 +855,7 @@ int mt7996_mcu_add_bss_info(struct mt7996_phy *phy, mt7996_mcu_bss_bmc_tlv(skb, vif, phy); mt7996_mcu_bss_ra_tlv(skb, vif, phy); mt7996_mcu_bss_txcmd_tlv(skb, true); + mt7996_mcu_bss_ifs_timing_tlv(skb, vif); if (vif->bss_conf.he_support) mt7996_mcu_bss_he_tlv(skb, vif, phy); @@ -838,6 +868,23 @@ int mt7996_mcu_add_bss_info(struct mt7996_phy *phy, MCU_WMWA_UNI_CMD(BSS_INFO_UPDATE), true); } +int mt7996_mcu_set_timing(struct mt7996_phy *phy, struct ieee80211_vif *vif) +{ + struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv; + struct mt7996_dev *dev = phy->dev; + struct sk_buff *skb; + + skb = __mt7996_mcu_alloc_bss_req(&dev->mt76, &mvif->mt76, + MT7996_BSS_UPDATE_MAX_SIZE); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + mt7996_mcu_bss_ifs_timing_tlv(skb, vif); + + return mt76_mcu_skb_send_msg(&dev->mt76, skb, + MCU_WMWA_UNI_CMD(BSS_INFO_UPDATE), true); +} + static int mt7996_mcu_sta_ba(struct mt76_dev *dev, struct mt76_vif *mvif, struct ieee80211_ampdu_params *params, diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h index d7075a4d0667..078f82858621 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h @@ -317,6 +317,22 @@ struct bss_sec_tlv { u8 __rsv2[1]; } __packed; +struct bss_ifs_time_tlv { + __le16 tag; + __le16 len; + u8 slot_valid; + u8 sifs_valid; + u8 rifs_valid; + u8 eifs_valid; + __le16 slot_time; + __le16 sifs_time; + __le16 rifs_time; + __le16 eifs_time; + u8 eifs_cck_valid; + u8 rsv; + __le16 eifs_cck_time; +} __packed; + struct bss_power_save { __le16 tag; __le16 len; @@ -552,6 +568,7 @@ enum { sizeof(struct bss_txcmd_tlv) + \ sizeof(struct bss_power_save) + \ sizeof(struct bss_sec_tlv) + \ + sizeof(struct bss_ifs_time_tlv) + \ sizeof(struct bss_mld_tlv)) #define MT7996_STA_UPDATE_MAX_SIZE (sizeof(struct sta_req_hdr) + \ diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h index 7dfdc7384056..42892f06faa7 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h @@ -463,6 +463,7 @@ int mt7996_mcu_set_radar_th(struct mt7996_dev *dev, int index, const struct mt7996_dfs_pattern *pattern); int mt7996_mcu_set_radio_en(struct mt7996_phy *phy, bool enable); int mt7996_mcu_set_rts_thresh(struct mt7996_phy *phy, u32 val); +int mt7996_mcu_set_timing(struct mt7996_phy *phy, struct ieee80211_vif *vif); int mt7996_mcu_get_chan_mib_info(struct mt7996_phy *phy, bool chan_switch); int mt7996_mcu_rdd_cmd(struct mt7996_dev *dev, int cmd, u8 index, u8 rx_sel, u8 val); @@ -526,7 +527,7 @@ void mt7996_mac_write_txwi(struct mt7996_dev *dev, __le32 *txwi, struct sk_buff *skb, struct mt76_wcid *wcid, struct ieee80211_key_conf *key, int pid, enum mt76_txq_id qid, u32 changed); -void mt7996_mac_set_timing(struct mt7996_phy *phy); +void mt7996_mac_set_coverage_class(struct mt7996_phy *phy); int mt7996_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif, struct ieee80211_sta *sta); void mt7996_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,