From nobody Sun Oct 5 10:51:17 2025 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3B7842571AA; Wed, 6 Aug 2025 10:35:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754476518; cv=none; b=kVQR6O1IXNxTnCBGK8cClKKdeGOpdt8elyjzugC12n/ZEUSdN+54avxxjS1Zo8UK8r0CW8E6MYgPjPfERqiE1FxeHqZu1vVNWUrK1rApV6+SYCt7Zxl2xKgzmXQfK2IiBROMGkSV6jIRgnEcVht16hdasiEyAfitzxgbP7YzSTs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754476518; c=relaxed/simple; bh=aBRqLh7e6J8eZ6mrUnRKX3siBTezwokCwCBIJemL6Dw=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=DCOTdF7fer9Xz6pkSEQ7ijk5XET6ANKD6YND3NIkFj/SmA3/11oP6nVWG+5Pa8hYhmzAWnWcYHxfWMlYBMmt99QlW30XcduQz8D1HdzOMQgyIplr6UhBnxZwBdgOk5jJdisMGfTGTJCc1BQK6sGES2QO2IHgkwU08KpcJfgvty4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.88.105]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4bxmlF548lz14MCN; Wed, 6 Aug 2025 18:30:17 +0800 (CST) Received: from kwepemk100013.china.huawei.com (unknown [7.202.194.61]) by mail.maildlp.com (Postfix) with ESMTPS id EFC59140155; Wed, 6 Aug 2025 18:35:13 +0800 (CST) Received: from localhost.localdomain (10.90.31.46) by kwepemk100013.china.huawei.com (7.202.194.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Wed, 6 Aug 2025 18:35:13 +0800 From: Jijie Shao To: , , , , , CC: , , , , , , , , Subject: [PATCH V3 net 3/3] net: hibmcge: fix the np_link_fail error reporting issue Date: Wed, 6 Aug 2025 18:27:58 +0800 Message-ID: <20250806102758.3632674-4-shaojijie@huawei.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20250806102758.3632674-1-shaojijie@huawei.com> References: <20250806102758.3632674-1-shaojijie@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: kwepems500002.china.huawei.com (7.221.188.17) To kwepemk100013.china.huawei.com (7.202.194.61) Content-Type: text/plain; charset="utf-8" Currently, after modifying device port mode, the np_link_ok state is immediately checked. At this point, the device may not yet ready, leading to the querying of an intermediate state. This patch will poll to check if np_link is ok after modifying device port mode, and only report np_link_fail upon timeout. Fixes: e0306637e85d ("net: hibmcge: Add support for mac link exception hand= ling feature") Signed-off-by: Jijie Shao Reviewed-by: Simon Horman --- drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.c b/drivers/net/= ethernet/hisilicon/hibmcge/hbg_hw.c index 8cca8316ba40..d0aa0661ecd4 100644 --- a/drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.c +++ b/drivers/net/ethernet/hisilicon/hibmcge/hbg_hw.c @@ -12,6 +12,8 @@ =20 #define HBG_HW_EVENT_WAIT_TIMEOUT_US (2 * 1000 * 1000) #define HBG_HW_EVENT_WAIT_INTERVAL_US (10 * 1000) +#define HBG_MAC_LINK_WAIT_TIMEOUT_US (500 * 1000) +#define HBG_MAC_LINK_WAIT_INTERVAL_US (5 * 1000) /* little endian or big endian. * ctrl means packet description, data means skb packet data */ @@ -228,6 +230,9 @@ void hbg_hw_fill_buffer(struct hbg_priv *priv, u32 buff= er_dma_addr) =20 void hbg_hw_adjust_link(struct hbg_priv *priv, u32 speed, u32 duplex) { + u32 link_status; + int ret; + hbg_hw_mac_enable(priv, HBG_STATUS_DISABLE); =20 hbg_reg_write_field(priv, HBG_REG_PORT_MODE_ADDR, @@ -239,8 +244,14 @@ void hbg_hw_adjust_link(struct hbg_priv *priv, u32 spe= ed, u32 duplex) =20 hbg_hw_mac_enable(priv, HBG_STATUS_ENABLE); =20 - if (!hbg_reg_read_field(priv, HBG_REG_AN_NEG_STATE_ADDR, - HBG_REG_AN_NEG_STATE_NP_LINK_OK_B)) + /* wait MAC link up */ + ret =3D readl_poll_timeout(priv->io_base + HBG_REG_AN_NEG_STATE_ADDR, + link_status, + FIELD_GET(HBG_REG_AN_NEG_STATE_NP_LINK_OK_B, + link_status), + HBG_MAC_LINK_WAIT_INTERVAL_US, + HBG_MAC_LINK_WAIT_TIMEOUT_US); + if (ret) hbg_np_link_fail_task_schedule(priv); } =20 --=20 2.33.0