From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4D5BFCD37AD for ; Thu, 7 May 2026 21:22:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=d8LF+HN6MPFYJb8bQNRiOZgxxZ4Tc700ODSqUDsVj5Y=; b=MgUAAmU8XC4YjIFx3XoQmo1nlg 3M9Hf9Y2yLbPCDwB7z51evbVGuTGF+o1ajfFK/9pJgQPs2WCrYm4ujFswPwk2QX+LrdVoY9ftQb/3 uwXsmmLJ9WB9dPf8gCb473eGMBTG6+QT5VmNIRPAq3dWAZ1teSyk6TSydgLhHsWkTdlRyHmvzeYAT UV1nQiZSMRYypRMjA+89NYUk7+D77MIQJql8b2feq0N7lZLGHjoGHujK9781FLF3Oe2v6ned1g+Fq 7Ct9r6obg5yRNIS/2RzsrnOohlkZ8ouEoNERe/phLFIkPK+ixD0xZxiFiDaq8eddPhNXka2cG9zKW FAB8nWJQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wL6BJ-00000004ugH-0iNY; Thu, 07 May 2026 21:22:53 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wL6BF-00000004uYp-2BZm; Thu, 07 May 2026 21:22:51 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 2A6FD40176; Thu, 7 May 2026 21:22:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53E2CC2BCC7; Thu, 7 May 2026 21:22:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778188969; bh=7vu850xBmp6IyMNAyLs7NMcbEzr0NmsijyXS782G9bs=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=AfJrp0M1i67J3mSQdKZqgscdvRqjm6kaed87/t1zkb12lk/xI2nqcgW/HsQHPiy/F t7aqsUgncbEOvU4e8B5/jSCF9YpeW2/S71UlprTClCfUftmh3fFP9vLbcgxuRZbwRC 5PBIYOKduAQ9BawqGN6HedkOU4nHGDsn4OYzCSPwyow5hjszDLDpT4fKF3QK1phh3y HxBo+tZfP4DS9ky5LDWTq5+M16mtBf1bBVWBkaQdNN82Rn5ck9TTI3f1yjsefzfGxx D2FL59v95gJa5SRP24deKQa0mFNNduxsVWimBLychprhRNtmgBdFqb7ulkAYZ3j+bG V2PtUOMu2DGyw== From: Lorenzo Bianconi Date: Thu, 07 May 2026 23:21:52 +0200 Subject: [PATCH net-next v4 09/10] net: airoha: Introduce WAN device flag MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260507-airoha-eth-multi-serdes-v4-9-af613b61ae02@kernel.org> References: <20260507-airoha-eth-multi-serdes-v4-0-af613b61ae02@kernel.org> In-Reply-To: <20260507-airoha-eth-multi-serdes-v4-0-af613b61ae02@kernel.org> To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lorenzo Bianconi Cc: Christian Marangi , Benjamin Larsson , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, Xuegang Lu X-Mailer: b4 0.14.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260507_142249_651688_6EE8FBFD X-CRM114-Status: GOOD ( 19.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Introduce WAN flag to specify if a given device is used to transmit/receive WAN or LAN traffic. Current codebase supports specifying LAN/WAN device configuration in ndo_init() callback during device bootstrap. Please note it is possible to specify multiple LAN devices but just a single WAN one. Tested-by: Xuegang Lu Signed-off-by: Lorenzo Bianconi --- drivers/net/ethernet/airoha/airoha_eth.c | 69 +++++++++++++++++++++++++------- drivers/net/ethernet/airoha/airoha_eth.h | 13 +++--- drivers/net/ethernet/airoha/airoha_ppe.c | 2 +- 3 files changed, 62 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/airoha/airoha_eth.c b/drivers/net/ethernet/airoha/airoha_eth.c index 1c4927c1aeb0..8617dd4f7932 100644 --- a/drivers/net/ethernet/airoha/airoha_eth.c +++ b/drivers/net/ethernet/airoha/airoha_eth.c @@ -1863,36 +1863,77 @@ static int airoha_set_gdm2_loopback(struct airoha_gdm_dev *dev) return 0; } -static int airoha_dev_init(struct net_device *netdev) +static struct airoha_gdm_dev * +airoha_get_wan_gdm_dev(struct airoha_eth *eth) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(eth->ports); i++) { + struct airoha_gdm_port *port = eth->ports[i]; + int j; + + if (!port) + continue; + + for (j = 0; j < ARRAY_SIZE(port->devs); j++) { + struct airoha_gdm_dev *dev = port->devs[j]; + + if (dev && !airoha_is_lan_gdm_dev(dev)) + return dev; + } + } + + return NULL; +} + +static void airoha_dev_set_qdma(struct airoha_gdm_dev *dev) { - struct airoha_gdm_dev *dev = netdev_priv(netdev); - struct airoha_gdm_port *port = dev->port; struct airoha_eth *eth = dev->eth; int i; /* QDMA0 is used for lan ports while QDMA1 is used for WAN ports */ dev->qdma = ð->qdma[!airoha_is_lan_gdm_dev(dev)]; dev->dev->irq = dev->qdma->irq_banks[0].irq; - airoha_set_macaddr(dev, netdev->dev_addr); + + for (i = 0; i < eth->soc->num_ppe; i++) + airoha_ppe_set_cpu_port(dev, i, airoha_get_fe_port(dev)); +} + +static int airoha_dev_init(struct net_device *netdev) +{ + struct airoha_gdm_dev *dev = netdev_priv(netdev); + struct airoha_gdm_port *port = dev->port; switch (port->id) { case AIROHA_GDM3_IDX: - case AIROHA_GDM4_IDX: - /* If GDM2 is active we can't enable loopback */ - if (!eth->ports[1]) { - int err; + case AIROHA_GDM4_IDX: { + struct airoha_eth *eth = dev->eth; - err = airoha_set_gdm2_loopback(dev); - if (err) - return err; - } + if (eth->ports[1] || airoha_get_wan_gdm_dev(eth)) + break; + fallthrough; + } + case AIROHA_GDM2_IDX: + /* GDM2 is always used as wan */ + dev->flags |= PRIV_FLAG_WAN; break; default: break; } - for (i = 0; i < eth->soc->num_ppe; i++) - airoha_ppe_set_cpu_port(dev, i, airoha_get_fe_port(dev)); + airoha_dev_set_qdma(dev); + airoha_set_macaddr(dev, netdev->dev_addr); + + if (!airoha_is_lan_gdm_dev(dev) && + (port->id == AIROHA_GDM3_IDX || port->id == AIROHA_GDM4_IDX)) { + int err; + + err = airoha_set_gdm2_loopback(dev); + if (err) { + dev->flags &= ~PRIV_FLAG_WAN; + return err; + } + } return 0; } diff --git a/drivers/net/ethernet/airoha/airoha_eth.h b/drivers/net/ethernet/airoha/airoha_eth.h index 3a313ac439e7..5715b03e630b 100644 --- a/drivers/net/ethernet/airoha/airoha_eth.h +++ b/drivers/net/ethernet/airoha/airoha_eth.h @@ -540,12 +540,17 @@ struct airoha_qdma { u64 fwd_tx_packets; }; +enum airoha_priv_flags { + PRIV_FLAG_WAN = BIT(0), +}; + struct airoha_gdm_dev { struct airoha_gdm_port *port; struct airoha_qdma *qdma; struct airoha_eth *eth; struct net_device *dev; + u32 flags; int nbq; }; @@ -653,13 +658,7 @@ static inline u16 airoha_qdma_get_txq(struct airoha_qdma *qdma, u16 qid) static inline bool airoha_is_lan_gdm_dev(struct airoha_gdm_dev *dev) { - struct airoha_gdm_port *port = dev->port; - - /* GDM1 port on EN7581 SoC is connected to the lan dsa switch. - * GDM{2,3,4} can be used as wan port connected to an external - * phy module. - */ - return port->id == 1; + return !(dev->flags & PRIV_FLAG_WAN); } static inline bool airoha_is_7581(struct airoha_eth *eth) diff --git a/drivers/net/ethernet/airoha/airoha_ppe.c b/drivers/net/ethernet/airoha/airoha_ppe.c index c4086d29d984..194cd50b2c74 100644 --- a/drivers/net/ethernet/airoha/airoha_ppe.c +++ b/drivers/net/ethernet/airoha/airoha_ppe.c @@ -350,7 +350,7 @@ static int airoha_ppe_foe_entry_prepare(struct airoha_eth *eth, return -EINVAL; port = dev->port; - if (dsa_port >= 0 || eth->ports[1]) + if (dsa_port >= 0 || airoha_is_lan_gdm_dev(dev)) pse_port = port->id == 4 ? FE_PSE_PORT_GDM4 : port->id; else -- 2.54.0