From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgbr1.qq.com (smtpbgbr1.qq.com [54.207.19.206]) (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 C4B8B307AF5; Wed, 22 Oct 2025 08:15:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.207.19.206 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761120909; cv=none; b=RF6PLSPpgqwVUo2SkkiUrIu4Cq+CSi9f6/1VmiyrH/MDaPw2ytRtFBKKNQHLGRPyNpHwaSkHdm3w0qFCflVlL/7oKoLeKPobo+on/q19tSW0o4lVCApHynDHx0tVoOqxCzJMHsaQS+3j5aO+bvMjjtqUCdoi0VkD52NDm6nmm2E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761120909; c=relaxed/simple; bh=0JJ/ovzmfSJ1jb9Vdak2WoRAgXatAloCuZPSZSQiBUY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=JhCbqnPUn4ohR+khTe33lexjBWIBabfu6bRSs1BrfTyz6x+soTwl5p7BnIGLot18ZdKdLHouHvlFFhmhXlQByKJYqCbbto9g/V3qR1FvLCdroNdjw4GhxfQSlS5o+Q+ErkvlOP+hRV+ZoeN5JHUj48v/axKjQUV4fsGek0SBAOE= 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=54.207.19.206 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: esmtpsz17t1761120850tb1eb85de X-QQ-Originating-IP: Qnq1rIXX6wkrfS7oTX1QPvuBjBCKdt3P49Rf2PK2a3A= Received: from localhost.localdomain ( [203.174.112.180]) by bizesmtp.qq.com (ESMTP) with id ; Wed, 22 Oct 2025 16:14:08 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 12093381508814799168 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 v15 2/5] net: rnpgbe: Add n500/n210 chip support with BAR2 mapping Date: Wed, 22 Oct 2025 16:13:48 +0800 Message-Id: <20251022081351.99446-3-dong100@mucse.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20251022081351.99446-1-dong100@mucse.com> References: <20251022081351.99446-1-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: 8bit X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:mucse.com:qybglogicsvrgz:qybglogicsvrgz3a-1 X-QQ-XMAILINFO: NwIS3Zdzte8wjKFJMFA0f9Iyx6T0SGofc2bEl+tk4DZ9sVHZldW8X8eL j5FkUsU3pwQAdBMxl4cPDnaPOp8R9OI/p6ZdbpLSa8YnCLJEMViaoPf/lLLZpWwSa6KBMfW s44B+6IbK3vrygTbDsVBF2e7AUqFpxG22FOEij+Bmv9VoGnzjY/R7EYSJK9VLjk4+uhAgGQ tbbcLJw8qzqrVXCpo8tzin0n3hGiELYRFFfBsd4dD6/ZQI0ht2b4Plm7kGv/2DuR+ek7+uN vwysrjpYh/wMOCtLwKB3Hd25vCh2AQpfYN6nq6pjky0XkOTLo2uy2KPv3crFEIjxzvbjVJd Cy1tdY8sCIf44N8Rmoe8+cF6Dc41MJvfPrmdwRlxhUjYWK8Y+v42fBv0xj0iilICgk0/tJd SvboGhm/uycNpMAwwHVPJ+UgaTz1mlbcuWzmqTh5bU3p3NxVi3D0/O3a1amekLwsAv5PCTK 470RAq5PWFdkPOJX3IRL8c0v8J5DKZjJMST/PbpjuADGN2ZVOTLutNZ6TJ2+e1ILEX1LQFZ 766n5WnC7qRQQuOUM/HHAq/VIvNQFtJWGLSvc2oIAvw/1mD6S0qBRAnIAw7MtwK/JpzAfyr fQE2hr5bCEk4LTEu5x9iAFl062JNaHojCQY+l7iDRiaURE+QXLIkpCGN45f7g1Z01yubs1T 466In6y1m57xlAAAevLKNstm5KDQcHfrtkMFRslYpLM28FQ5QTDDZf9I5lW4Jt0ndJ6ZnmV 8YF2RiBxMYfhVlltSAdyDWHLaP/c9m2in6U0x6cxSVdJkxek5zmUn+QblhKQlpFsLlOCHp1 Rogl77MqGLc10aJ93aHt95w+UC9VEchEmK6dzNVLWC76p6UJugHiZZokPFkj67z+bDHU9ZK CcXpPjMTvI0Co5JqPVmejs3HoNjsUhGkVAt8R8hHoPZGfCx4KGSWM27XdbqnYujtCmncHK3 gHwt5I4Zs0h4sU/cRwrXf4caNr9UWPq06AwBx5bSVOJfxSkPVM955++O0uVItl3iJAd98pM ObCBIs3d1ZEpGSBAAn X-QQ-XMRINFO: OD9hHCdaPRBwq3WW+NvGbIU= X-QQ-RECHKSPAM: 0 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/ethernet/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 }; +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/ethernet/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. */ #include +#include +#include #include "rnpgbe.h" +#include "rnpgbe_hw.h" static const char rnpgbe_driver_name[] = "rnpgbe"; @@ -21,6 +24,54 @@ static struct pci_device_id rnpgbe_pci_tbl[] = { {0, }, }; +/** + * 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 = alloc_etherdev_mq(sizeof(struct mucse), RNPGBE_MAX_QUEUES); + if (!netdev) + return -ENOMEM; + + SET_NETDEV_DEV(netdev, &pdev->dev); + mucse = netdev_priv(netdev); + mucse->netdev = netdev; + mucse->pdev = pdev; + pci_set_drvdata(pdev, mucse); + + hw = &mucse->hw; + hw_addr = devm_ioremap(&pdev->dev, + pci_resource_start(pdev, 2), + pci_resource_len(pdev, 2)); + if (!hw_addr) { + err = -EIO; + goto err_free_net; + } + + hw->hw_addr = 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[] = { **/ static int rnpgbe_probe(struct pci_dev *pdev, const struct pci_device_id *id) { + int board_type = id->driver_data; int err; err = pci_enable_device_mem(pdev); @@ -60,6 +112,10 @@ static int rnpgbe_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_free_regions; } + err = 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 struct pci_device_id *id) return err; } +/** + * 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 = pci_get_drvdata(pdev); + struct net_device *netdev; + + if (!mucse) + return; + netdev = 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 struct 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 = pci_get_drvdata(pdev); + struct net_device *netdev = mucse->netdev; + + rtnl_lock(); + netif_device_detach(netdev); + rtnl_unlock(); pci_disable_device(pdev); } -- 2.25.1