From nobody Thu Oct 2 14:25:55 2025 Received: from smtpbgsg2.qq.com (smtpbgsg2.qq.com [54.254.200.128]) (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 D7ECC2D8779; Tue, 16 Sep 2025 11:30:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.254.200.128 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758022251; cv=none; b=DGbJkMhYuvZju0pkyT2AqlVGdvErsuBKSq0szFD7GgCq4gfOK7tFgs0fzhohYKXuoNeSHXFkqjlE9xRGRxEGhS8wVM6TN9hmDQsMb5mnqvcEgA4DLlTeDM8X6vhUcZ+ed6xcpGOTQV/5ZwPg4O88PU2qQhtEC9KVfj8jRNdqLUI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758022251; c=relaxed/simple; bh=IbC3ZsCT/eOG9VQXgf0W2xD3H/jaZ9QReTLZcER3r0o=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=qq8jrtTyVP5bjByae8Ia5L5cz/o4lBB38X8K0ffDj+ybCH2W/FF8Gpv6X6n4UPnERldqJWyQK3RL3z+j045l5CNjCQ8Wms/bVh1HwapSqtiw5bWNNAx/k2gm9aeFyvbKuRiiVEDjGTl90+pfnkovloErc8blKuQPV0Grk7mfQ6k= 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=54.254.200.128 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: esmtpsz17t1758022217tf7fa742c X-QQ-Originating-IP: q6OkXb2Ki/dpCXj1w6PFIBtYVIQ2SOSS1CWTuFEQNhQ= Received: from localhost.localdomain ( [203.174.112.180]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 16 Sep 2025 19:30:13 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 7849755565001832494 EX-QQ-RecipientCnt: 29 From: Dong Yibo To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, corbet@lwn.net, gur.stavi@huawei.com, maddy@linux.ibm.com, mpe@ellerman.id.au, danishanwar@ti.com, lee@trager.us, gongfan1@huawei.com, lorenzo@kernel.org, geert+renesas@glider.be, Parthiban.Veerasooran@microchip.com, lukas.bulwahn@redhat.com, alexanderduyck@fb.com, richardcochran@gmail.com, kees@kernel.org, gustavoars@kernel.org, rdunlap@infradead.org, vadim.fedorenko@linux.dev, joerg@jo-so.de Cc: netdev@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, dong100@mucse.com Subject: [PATCH net-next v12 2/5] net: rnpgbe: Add n500/n210 chip support with BAR2 mapping Date: Tue, 16 Sep 2025 19:29:49 +0800 Message-Id: <20250916112952.26032-3-dong100@mucse.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250916112952.26032-1-dong100@mucse.com> References: <20250916112952.26032-1-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: esmtpsz:mucse.com:qybglogicsvrgz:qybglogicsvrgz8a-1 X-QQ-XMAILINFO: MY/4gqRZUG70yrmzalFPrECEUzCeeQUeQ3TNy0WqzUhFsqwNOF5vS2M/ yySltSMVME8C44B+BEwcU/UqCi+JEQbvew4+wDhrfreM2yzeqJlZE1CSyUb/NOOzM9uvP0n Dy0didrqzbCS0/cGaIEWcOgUIHEIPj46wJjUfORnT91eHtX0f74hqO/Jqa3ow/sWz6WttS9 FiKPKUkwisdvTff5n2hvSorV8bd4TIbnq9FNAmgdfBIMLJMZ4rLIx8ghYo1RJEjC6Ai+Hlb /dxpEgOHKDeNNyhVTpuoCSIB0BJiepRQzKimqnlLvPYqFf+bAgNHDiqf/QxTTiDi5yzRLoR A55W+1nPieI0JqqrnCO3byI5oeisRcupyL3I9SE5roP0KJunTdWmS6Z+RVdx0SZ+hxjp1jp L1c4ba7F7aUAu/XtQnheHtiYHxdjAckJK4lmHU0wp9ONS1GqcSnQszJgW2Fg6vau+qr3JOO v+s0TKvU+v4VgFvnzOuXH30r8oPTzh93H5KfEWk4b4pkEGXe55XPCpvsuCzyOmNPWz+IWMN CYsV5FveH7KfNmJFGMCyMOTgYnR/DE5hD/0+BZ2QncsRb5h8z/Q+wCKdOFK5syki/8Ji0Ms 0NOZoLX4x4CGwYlX0GerVSsVndbk00K6wWR65L0sEULjO5VvyYxtoTo61U7TBeHssB25jqp lCuIy7W4b7qxOREDXNsUamkklmop9MTvC3pITH49aLmWq8inZGk98iA4ZXcoEMRI2Knh9/k VGMOiWnCRDq6CiyySf4sFaJOg2Qfugy9X76xMQ5s0eg/jqgKdCyngxc4YwhPeptru5dt5WN 4Lv4wagazGWF7879U6QXCkJC3T2hyd8k5p7CVbOYUs7rQTEn8iA9i9gAQDEUeMOo+xsq8ZD ZXR7glt7kfgDWbsy0B0OL8+ryOUBtnNU8TkEnYavn/IQYsX2ih9whfr3puT/Iz7nWzfduOr oFdUB9ZWIGC9EXzvTWiYowVyo9QfgoUQNmWQ0rRszS3LN2ybKWAZzCFqs11v0l08j5sp5Bw qou293nAYc1EStAMlyDc/wmNkriNqqYdpVXF0ykA== 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 | 79 +++++++++++++++++++ 3 files changed, 97 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 3c37fe2534a8..3b122dd508ce 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 PCI_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 60bbc806f17b..0afe39621661 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 @@ -25,6 +28,54 @@ 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 @@ -37,6 +88,7 @@ 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); @@ -63,6 +115,9 @@ static int rnpgbe_probe(struct pci_dev *pdev, const stru= ct pci_device_id *id) dev_err(&pdev->dev, "pci_save_state failed %d\n", err); goto err_free_regions; } + err =3D rnpgbe_add_adapter(pdev, board_type); + if (err) + goto err_free_regions; =20 return 0; err_free_regions: @@ -72,6 +127,23 @@ 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 @@ -83,6 +155,7 @@ 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); } @@ -93,6 +166,12 @@ 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