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Mon, 19 Apr 2021 10:21:41 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:49028 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S238604AbhDSOVh (ORCPT ); Mon, 19 Apr 2021 10:21:37 -0400 X-UUID: 3970f636acf443b3867fcd2d47c393e6-20210419 X-UUID: 3970f636acf443b3867fcd2d47c393e6-20210419 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 894135357; Mon, 19 Apr 2021 22:21:02 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs01n2.mediatek.inc (172.21.101.79) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 19 Apr 2021 22:21:00 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 19 Apr 2021 22:21:00 +0800 From: To: , CC: , , , , , , , , , , , , , Lorenzo Bianconi , Leon Yen Subject: [PATCH v2 4/6] mt76: mt7921: introduce mt7921_wpdma_reinit_cond utility routine Date: Mon, 19 Apr 2021 22:20:57 +0800 Message-ID: <1618842059-8192-5-git-send-email-sean.wang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1618842059-8192-1-git-send-email-sean.wang@mediatek.com> References: <1618842059-8192-1-git-send-email-sean.wang@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: FAD8A403A11F7897794284DAA6677DC5ECB4C422DCC3A0B248AEECEBD0CF588A2000:8 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Lorenzo Bianconi Add mt7921_wpdma_reinit_cond to check dummy reg if driver needs to reinitialized WPDMA after driver_own operation Co-developed-by: Sean Wang Signed-off-by: Sean Wang Co-developed-by: Leon Yen Signed-off-by: Leon Yen Signed-off-by: Lorenzo Bianconi --- .../net/wireless/mediatek/mt76/mt76_connac.h | 2 ++ .../wireless/mediatek/mt76/mt7921/debugfs.c | 3 +++ .../net/wireless/mediatek/mt76/mt7921/dma.c | 25 +++++++++++++++++++ .../wireless/mediatek/mt76/mt7921/mt7921.h | 6 +++++ 4 files changed, 36 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac.h index 9e61c107c640..6c889b90fd12 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76_connac.h +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac.h @@ -64,11 +64,13 @@ struct mt76_connac_pm { struct delayed_work ps_work; unsigned long last_activity; unsigned long idle_timeout; + struct { unsigned long last_wake_event; unsigned long awake_time; unsigned long last_doze_event; unsigned long doze_time; + unsigned int lp_wake; } stats; }; diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c index f3982578cc56..6ee423dd4027 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c @@ -269,6 +269,7 @@ mt7921_pm_stats(struct seq_file *s, void *data) { struct mt7921_dev *dev = dev_get_drvdata(s->private); struct mt76_connac_pm *pm = &dev->pm; + unsigned long awake_time = pm->stats.awake_time; unsigned long doze_time = pm->stats.doze_time; @@ -281,6 +282,8 @@ mt7921_pm_stats(struct seq_file *s, void *data) jiffies_to_msecs(awake_time), jiffies_to_msecs(doze_time)); + seq_printf(s, "low power wakes: %9d\n", pm->stats.lp_wake); + return 0; } diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c index fb7f98d92377..71e664ee7652 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c @@ -353,6 +353,31 @@ int mt7921_wpdma_reset(struct mt7921_dev *dev, bool force) return 0; } +int mt7921_wpdma_reinit_cond(struct mt7921_dev *dev) +{ + struct mt76_connac_pm *pm = &dev->pm; + int err; + + /* check if the wpdma must be reinitialized */ + if (mt7921_dma_need_reinit(dev)) { + /* disable interrutpts */ + mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0); + mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0); + + err = mt7921_wpdma_reset(dev, false); + if (err) { + dev_err(dev->mt76.dev, "wpdma reset failed\n"); + return err; + } + + /* enable interrutpts */ + mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff); + pm->stats.lp_wake++; + } + + return 0; +} + int mt7921_dma_init(struct mt7921_dev *dev) { /* Increase buffer size to receive large VHT/HE MPDUs */ diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h index 67cb0a647066..efc3ba791342 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h @@ -254,6 +254,7 @@ int mt7921_eeprom_get_target_power(struct mt7921_dev *dev, void mt7921_eeprom_init_sku(struct mt7921_dev *dev); int mt7921_dma_init(struct mt7921_dev *dev); int mt7921_wpdma_reset(struct mt7921_dev *dev, bool force); +int mt7921_wpdma_reinit_cond(struct mt7921_dev *dev); void mt7921_dma_cleanup(struct mt7921_dev *dev); int mt7921_run_firmware(struct mt7921_dev *dev); int mt7921_mcu_init(struct mt7921_dev *dev); @@ -317,6 +318,11 @@ mt7921_l1_rmw(struct mt7921_dev *dev, u32 addr, u32 mask, u32 val) #define mt7921_l1_set(dev, addr, val) mt7921_l1_rmw(dev, addr, 0, val) #define mt7921_l1_clear(dev, addr, val) mt7921_l1_rmw(dev, addr, val, 0) +static inline bool mt7921_dma_need_reinit(struct mt7921_dev *dev) +{ + return !mt76_get_field(dev, MT_WFDMA_DUMMY_CR, MT_WFDMA_NEED_REINIT); +} + void mt7921_mac_init(struct mt7921_dev *dev); bool mt7921_mac_wtbl_update(struct mt7921_dev *dev, int idx, u32 mask); void mt7921_mac_reset_counters(struct mt7921_phy *phy);