From nobody Mon Feb 9 01:29:56 2026 Received: from smtpbg154.qq.com (smtpbg154.qq.com [15.184.224.54]) (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 B1F2E237713; Mon, 27 Oct 2025 03:29:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=15.184.224.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761535798; cv=none; b=UupXxr+An0wZypiV3LB+LEknvFJADIXg/UyBigPqs/tsAy8Br7+zwoHUpZfKJd4DdVOAdsJEDoJOri4cYBra4Amk7XeDJevlrnLzxJPjIfjGGj9H87ijPTLhno4IjJA+WJc/HbUhgt5xgzZyZWBq4W1vvImLhbqs6rx4NnyHn4U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761535798; c=relaxed/simple; bh=0JJ/ovzmfSJ1jb9Vdak2WoRAgXatAloCuZPSZSQiBUY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=K6akyo6zvEkP0BdlEhTVr37feusb2c/edNZmoAyjm22bv98Q3crMezb8ZGYOfd58fWqKUq5atsR4Ml2M7qs9TLEFbGjSZ103x5daoEfTPaqwnK8id5WCkNWFa30r2vy2i8M1SvH2W+UryKegLeb0afSv7jmtabP5Gxyzqly8OQA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=mucse.com; spf=pass smtp.mailfrom=mucse.com; arc=none smtp.client-ip=15.184.224.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=mucse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mucse.com X-QQ-mid: zesmtpsz2t1761535764t6eab0f86 X-QQ-Originating-IP: J7BdTkrpzSDqmf5R7Ze+Gav7qVZe5k22TbavH0t757Q= Received: from localhost.localdomain ( [203.174.112.180]) by bizesmtp.qq.com (ESMTP) with id ; Mon, 27 Oct 2025 11:29:22 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 10408304198966839365 EX-QQ-RecipientCnt: 17 From: Dong Yibo To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, corbet@lwn.net, andrew+netdev@lunn.ch, danishanwar@ti.com, vadim.fedorenko@linux.dev, geert+renesas@glider.be, mpe@ellerman.id.au, lorenzo@kernel.org, lukas.bulwahn@redhat.com Cc: netdev@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, dong100@mucse.com Subject: [PATCH net-next v16 2/5] net: rnpgbe: Add n500/n210 chip support with BAR2 mapping Date: Mon, 27 Oct 2025 11:29:02 +0800 Message-Id: <20251027032905.94147-3-dong100@mucse.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20251027032905.94147-1-dong100@mucse.com> References: <20251027032905.94147-1-dong100@mucse.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-QQ-SENDSIZE: 520 Feedback-ID: zesmtpsz:mucse.com:qybglogicsvrgz:qybglogicsvrgz3a-1 X-QQ-XMAILINFO: OAj1qrjhA85Aij9gO9YcsnVsIv6K812OP5AXq8XQdF4/ngUgLJ0G8jHp jufCxLycAKP82CLZS9dIb8Y8z621TtE2IuZm+kto9vA6E78UThgewOQd+nE74Zd/GmR39qG vNsmNCgUO1AmVRRQO5dyLjnLYA40SGWldmEite0Z/CRRyX7OcerN0K8XBjBkaUOwWZrhWFK xFug+mJD2FDQ4egJ2avgW715boI8ofVsHMObQPK/9gfaIvyKNLUnWKdBUFcgVnByvXACSzO REqUsGjq7NsolMCAVGFv5Ud4BxOzO7EeozNc2vLmfvfmyeR8EvDUaOESf788McQ6frw6IiG sJzUNWgLsEWgovQaSC3irU0DMaj36QiPX0ATahLEUOXuuUMyfS5CP2dvBGksFl3CV3I88a+ boM//U+ssQN6mE+EdkpKdEFyUoSTOtyRy6cPzMdpRgUe1KtFQrPgU6eeUZ+H11/uq9mi5C6 rhqoBMxdIl3ajLM7P5yJdeWdVr5oebwjjcZceMypxnJ4YZDgrLkNqx1oAMZGpny9YIz/gRg ZHOJeeN4DMYHROIlvlm2/v9jc2q7xf3aQ7jLbGgLkKKDzs4oDbeISdzGjyFm2ubVv/AJhJU q2X1n7VjC9RH+C+tvZLe+coDwOJvb8w3a/yKjCMvISOPS/3hE8mHbWisAc3stKfhtlSESI4 nzB3vHsU9ohcTy8Ot1jbxHExcNwK2ay0NIBVMVXRJ4XVIS6W2YTb93HojoDWxKsrPoWdx8E c17D1yDxrd2RKEuWuQRmB+SjQRUSYgFjBGQUmMBExRviqK4TYH9ID6EOSzqrM6+kg5/s/HO QqzUthoGsjq/fKw7fiM/CCKqKxMr3yvg4gb7D1YYqmveTFBZv9cs5grCV/H4IDaulFuQem4 UJ4HXavied+OnKBEUnf/sc2zzi9GG6bNpfDL3Lhb9LN+ToPm2Tnmo5NdD8uWDHAUxwG7aUY VgppCTnEAaU/3coNukpB+u2LzDe2OczzHTQFtBhiaK8zYreqPTg018q4OMhl44sXSc+busO Vb0a1FaXSIkx3MXnQcmxFZq/xtI9g= X-QQ-XMRINFO: MPJ6Tf5t3I/ycC2BItcBVIA= X-QQ-RECHKSPAM: 0 Content-Type: text/plain; charset="utf-8" Add hardware initialization foundation for MUCSE 1Gbe controller, including: 1. Map PCI BAR2 as hardware register base; 2. Bind PCI device to driver private data (struct mucse) and initialize hardware context (struct mucse_hw); 3. Reserve board-specific init framework via rnpgbe_init_hw. Signed-off-by: Dong Yibo Reviewed-by: Vadim Fedorenko Reviewed-by: MD Danish Anwar --- drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h | 10 +++ drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h | 8 ++ .../net/ethernet/mucse/rnpgbe/rnpgbe_main.c | 80 +++++++++++++++++++ 3 files changed, 98 insertions(+) create mode 100644 drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h b/drivers/net/ether= net/mucse/rnpgbe/rnpgbe.h index d3439d28c654..a121ce4872a6 100644 --- a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h +++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h @@ -9,6 +9,16 @@ enum rnpgbe_boards { board_n210 }; =20 +struct mucse_hw { + void __iomem *hw_addr; +}; + +struct mucse { + struct net_device *netdev; + struct pci_dev *pdev; + struct mucse_hw hw; +}; + /* Device IDs */ #define PCI_VENDOR_ID_MUCSE 0x8848 #define RNPGBE_DEVICE_ID_N500_QUAD_PORT 0x8308 diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h b/drivers/net/et= hernet/mucse/rnpgbe/rnpgbe_hw.h new file mode 100644 index 000000000000..3a779806e8be --- /dev/null +++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2020 - 2025 Mucse Corporation. */ + +#ifndef _RNPGBE_HW_H +#define _RNPGBE_HW_H + +#define RNPGBE_MAX_QUEUES 8 +#endif /* _RNPGBE_HW_H */ diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_main.c b/drivers/net/= ethernet/mucse/rnpgbe/rnpgbe_main.c index 019e819fb497..305657d73e25 100644 --- a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_main.c +++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_main.c @@ -2,8 +2,11 @@ /* Copyright(c) 2020 - 2025 Mucse Corporation. */ =20 #include +#include +#include =20 #include "rnpgbe.h" +#include "rnpgbe_hw.h" =20 static const char rnpgbe_driver_name[] =3D "rnpgbe"; =20 @@ -21,6 +24,54 @@ static struct pci_device_id rnpgbe_pci_tbl[] =3D { {0, }, }; =20 +/** + * rnpgbe_add_adapter - Add netdev for this pci_dev + * @pdev: PCI device information structure + * @board_type: board type + * + * rnpgbe_add_adapter initializes a netdev for this pci_dev + * structure. Initializes Bar map, private structure, and a + * hardware reset occur. + * + * Return: 0 on success, negative errno on failure + **/ +static int rnpgbe_add_adapter(struct pci_dev *pdev, + int board_type) +{ + struct net_device *netdev; + void __iomem *hw_addr; + struct mucse *mucse; + struct mucse_hw *hw; + int err; + + netdev =3D alloc_etherdev_mq(sizeof(struct mucse), RNPGBE_MAX_QUEUES); + if (!netdev) + return -ENOMEM; + + SET_NETDEV_DEV(netdev, &pdev->dev); + mucse =3D netdev_priv(netdev); + mucse->netdev =3D netdev; + mucse->pdev =3D pdev; + pci_set_drvdata(pdev, mucse); + + hw =3D &mucse->hw; + hw_addr =3D devm_ioremap(&pdev->dev, + pci_resource_start(pdev, 2), + pci_resource_len(pdev, 2)); + if (!hw_addr) { + err =3D -EIO; + goto err_free_net; + } + + hw->hw_addr =3D hw_addr; + + return 0; + +err_free_net: + free_netdev(netdev); + return err; +} + /** * rnpgbe_probe - Device initialization routine * @pdev: PCI device information struct @@ -33,6 +84,7 @@ static struct pci_device_id rnpgbe_pci_tbl[] =3D { **/ static int rnpgbe_probe(struct pci_dev *pdev, const struct pci_device_id *= id) { + int board_type =3D id->driver_data; int err; =20 err =3D pci_enable_device_mem(pdev); @@ -60,6 +112,10 @@ static int rnpgbe_probe(struct pci_dev *pdev, const str= uct pci_device_id *id) goto err_free_regions; } =20 + err =3D rnpgbe_add_adapter(pdev, board_type); + if (err) + goto err_free_regions; + return 0; err_free_regions: pci_release_mem_regions(pdev); @@ -68,6 +124,23 @@ static int rnpgbe_probe(struct pci_dev *pdev, const str= uct pci_device_id *id) return err; } =20 +/** + * rnpgbe_rm_adapter - Remove netdev for this mucse structure + * @pdev: PCI device information struct + * + * rnpgbe_rm_adapter remove a netdev for this mucse structure + **/ +static void rnpgbe_rm_adapter(struct pci_dev *pdev) +{ + struct mucse *mucse =3D pci_get_drvdata(pdev); + struct net_device *netdev; + + if (!mucse) + return; + netdev =3D mucse->netdev; + free_netdev(netdev); +} + /** * rnpgbe_remove - Device removal routine * @pdev: PCI device information struct @@ -79,6 +152,7 @@ static int rnpgbe_probe(struct pci_dev *pdev, const stru= ct pci_device_id *id) **/ static void rnpgbe_remove(struct pci_dev *pdev) { + rnpgbe_rm_adapter(pdev); pci_release_mem_regions(pdev); pci_disable_device(pdev); } @@ -89,6 +163,12 @@ static void rnpgbe_remove(struct pci_dev *pdev) **/ static void rnpgbe_dev_shutdown(struct pci_dev *pdev) { + struct mucse *mucse =3D pci_get_drvdata(pdev); + struct net_device *netdev =3D mucse->netdev; + + rtnl_lock(); + netif_device_detach(netdev); + rtnl_unlock(); pci_disable_device(pdev); } =20 --=20 2.25.1