From nobody Mon Feb 9 17:23:10 2026 Received: from smtpbgbr2.qq.com (smtpbgbr2.qq.com [54.207.22.56]) (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 CDF74334704; Tue, 9 Sep 2025 12:09:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.207.22.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757419803; cv=none; b=EbBD4TpU04+NwMAWb1IMtdj8y4nukbguuMMr58HsTL/SaYAqY0vGqPehGIsRTg/vTSsJcRj/vTE5+k9fsJMU1fhaV/oT5rg/YrdORMpvk+NjLmk7dcM9f3wLgolZgOjigSZoPtZ9chn3PiZMCFvLRzE3NJkMo6IVi5Y3Iy9PJaE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757419803; c=relaxed/simple; bh=fb+9nirWQzlNmSVT6DXPZW7dnFkveduyG16VUJZp0Vo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=TfQIjpp4+gGbIRytuCh3O1YnzVDyF3Fj5bU+q1ERS8ZnTLXIXprrLYxA6uZV7LlxWOPCuAyURcy4S0nRD+2cbeDx+x2AyBD6xxV74pRHGCus6Rf31C2hrpmGyc8y6zOcvVN0pFzajbehRq/V0J1kdy+EYSzgFnCuZ/OflhDdBGk= 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=54.207.22.56 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: zesmtpsz6t1757419777tc115d208 X-QQ-Originating-IP: OLjRMUrsZaAfbbJy7epHSYAgn5O1zQVi3D5eUiVsHm0= Received: from localhost.localdomain ( [203.174.112.180]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 09 Sep 2025 20:09:34 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 8394822052060240261 EX-QQ-RecipientCnt: 28 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 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 v11 5/5] net: rnpgbe: Add register_netdev Date: Tue, 9 Sep 2025 20:09:06 +0800 Message-Id: <20250909120906.1781444-6-dong100@mucse.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250909120906.1781444-1-dong100@mucse.com> References: <20250909120906.1781444-1-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:qybglogicsvrgz8a-1 X-QQ-XMAILINFO: OLC9REgaVYQoWfnuDbwzc727RdpjUA7G21o+47soomlkRNiGP53GHW1X iaBCYO51ofB+k/XaLKBqgAMUXUJ59T8pYbK3U2b77JdE+k2HtK+E4LXysG8T+zHA6WfjYYk Dlf7O4pRaJ9nQUc9LH+NCcTHkKOTj1EseFNMlh6mSfvbwsFgAicTZFhQeCdJNfVion5u5Xh btXCZh1R8ejnz3S4CbLgYSObaxLfJ0hCzCDVaryaB2ZpbVUuGEXQVz5stvfJiHX+avKGD/U Ulu22E46khTiQzpRmZqpI5HHaXWyPlEvn0fPxoWU3eh+qV4QmFSuRmCTBrkiV2kx1f2NYYp 4/f5jIPBTgycVEgClQXuB8cxq30xEbB32KnAZCYSYPgDnVV0M3fDSfsT6S+kzSoiw/9+nHc 4AQbxWJu2iVOSZPe2f7yST5ByMkJ27Uj/Sufrh9c1Y7kOgJf9t8ld+YuSrnrG+mFynX//aX QFC0whzRgMn0yUJk4d0k+Y+IYtfh5pz/OzBLasYw40XX+k3jBFokghKq6RbJ0l6YTgF9dgq 8EfbnefRI2wl0qCY+dIEKMqIDyyBbhNk8WuwNuNSK02oIXhFEgLy6HkH6B6geVv9QLa2g+s Dy6dU/eL/aOMtOQJjzJNcYvUVCpiBtlUcEWXPcazUwS3uckkgI/ddJRHiSs1MAL/bfRDM+A kRfpUEaTBObknxNhvFO0EKA3boVMEYBqKie1VgmwMh4hQmMmS9KCeqX/dw4Wffe5rCGzKH9 LztBvfQx5hU9gvNFSoC+rpJcqZPa3un8E208rx03rlhPs6elYsGwPG56Hh16iaQKNm3HGCo JY+HuwCmCTPXTi0/T0XO+a86+/HvEvnXoc9VYRALqA/GQOqklxpP7jSbAZIKfRlT4mDBqvb LoSF5qCNB6p+ibQ1uWJsgon+YEXd38GmmMmjPLf+2mTZn2DUa4MTubukHkW1lURt5KQSEXv tCkFHhxhg3idOBAHkz98KbB7+ij8ZhxsK++zWBds4gL70QixGQNsQq1XN7MJ9WUht1s9Qbx UCkRu6QfppNvMf6yLmwWy8Sy4oLlmmV2zVoM+T7w== X-QQ-XMRINFO: OD9hHCdaPRBwq3WW+NvGbIU= X-QQ-RECHKSPAM: 0 Content-Type: text/plain; charset="utf-8" Complete the network device (netdev) registration flow for Mucse Gbe Ethernet chips, including: 1. Hardware state initialization: - Send powerup notification to firmware (via echo_fw_status) - Sync with firmware - Reset hardware 2. MAC address handling: - Retrieve permanent MAC from firmware (via mucse_mbx_get_macaddr) - Fallback to random valid MAC (eth_random_addr) if not valid mac from Fw Signed-off-by: Dong Yibo --- drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h | 25 +++++ .../net/ethernet/mucse/rnpgbe/rnpgbe_chip.c | 85 +++++++++++++++ drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h | 2 + .../net/ethernet/mucse/rnpgbe/rnpgbe_main.c | 102 ++++++++++++++++++ 4 files changed, 214 insertions(+) diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h b/drivers/net/ether= net/mucse/rnpgbe/rnpgbe.h index 3a1ad82c24bd..5278cb1d421e 100644 --- a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h +++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h @@ -6,12 +6,17 @@ =20 #include #include +#include =20 enum rnpgbe_boards { board_n500, board_n210 }; =20 +struct mucse_dma_info { + void __iomem *dma_base_addr; +}; + struct mucse_mbx_stats { u32 msgs_tx; /* Number of messages sent from PF to fw */ u32 msgs_rx; /* Number of messages received from fw to PF */ @@ -34,9 +39,26 @@ struct mucse_mbx_info { u32 fwpf_ctrl_base; }; =20 +struct mucse_hw; + +struct mucse_hw_operations { + int (*reset_hw)(struct mucse_hw *hw); + int (*get_perm_mac)(struct mucse_hw *hw); + int (*mbx_send_notify)(struct mucse_hw *hw, bool enable, int mode); +}; + +enum { + mucse_fw_powerup, +}; + struct mucse_hw { void __iomem *hw_addr; + struct pci_dev *pdev; + const struct mucse_hw_operations *ops; + struct mucse_dma_info dma; struct mucse_mbx_info mbx; + int port; + u8 perm_addr[ETH_ALEN]; u8 pfvfnum; }; =20 @@ -54,4 +76,7 @@ int rnpgbe_init_hw(struct mucse_hw *hw, int board_type); #define PCI_DEVICE_ID_N500_DUAL_PORT 0x8318 #define PCI_DEVICE_ID_N210 0x8208 #define PCI_DEVICE_ID_N210L 0x820a + +#define rnpgbe_dma_wr32(dma, reg, val) \ + writel((val), (dma)->dma_base_addr + (reg)) #endif /* _RNPGBE_H */ diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c b/drivers/net/= ethernet/mucse/rnpgbe/rnpgbe_chip.c index 0e277e7557ee..436fb03f9736 100644 --- a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c +++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c @@ -1,11 +1,90 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 2020 - 2025 Mucse Corporation. */ =20 +#include #include +#include =20 #include "rnpgbe.h" #include "rnpgbe_hw.h" #include "rnpgbe_mbx.h" +#include "rnpgbe_mbx_fw.h" + +/** + * rnpgbe_get_permanent_mac - Get permanent mac + * @hw: hw information structure + * + * rnpgbe_get_permanent_mac tries to get mac from hw + * + * Return: 0 on success, negative errno on failure + **/ +static int rnpgbe_get_permanent_mac(struct mucse_hw *hw) +{ + struct device *dev =3D &hw->pdev->dev; + u8 *mac_addr =3D hw->perm_addr; + int err; + + err =3D mucse_mbx_get_macaddr(hw, hw->pfvfnum, mac_addr, hw->port); + if (err) { + dev_err(dev, "Failed to get MAC from FW %d\n", err); + return err; + } + + if (!is_valid_ether_addr(mac_addr)) { + dev_err(dev, "Failed to get valid MAC from FW\n"); + return -EINVAL; + } + + return 0; +} + +/** + * rnpgbe_reset - Do a hardware reset + * @hw: hw information structure + * + * rnpgbe_reset calls fw to do a hardware + * reset, and cleans some regs to default. + * + * Return: 0 on success, negative errno on failure + **/ +static int rnpgbe_reset(struct mucse_hw *hw) +{ + struct mucse_dma_info *dma =3D &hw->dma; + + rnpgbe_dma_wr32(dma, RNPGBE_DMA_AXI_EN, 0); + return mucse_mbx_reset_hw(hw); +} + +/** + * rnpgbe_mbx_send_notify - Echo fw status + * @hw: hw information structure + * @enable: true or false status + * @mode: status mode + * + * Return: 0 on success, negative errno on failure + **/ +static int rnpgbe_mbx_send_notify(struct mucse_hw *hw, + bool enable, + int mode) +{ + int err; + + switch (mode) { + case mucse_fw_powerup: + err =3D mucse_mbx_powerup(hw, enable); + break; + default: + err =3D -EINVAL; + } + + return err; +} + +static const struct mucse_hw_operations rnpgbe_hw_ops =3D { + .reset_hw =3D rnpgbe_reset, + .get_perm_mac =3D rnpgbe_get_permanent_mac, + .mbx_send_notify =3D rnpgbe_mbx_send_notify, +}; =20 /** * rnpgbe_init_n500 - Setup n500 hw info @@ -48,8 +127,14 @@ static void rnpgbe_init_n210(struct mucse_hw *hw) **/ int rnpgbe_init_hw(struct mucse_hw *hw, int board_type) { + struct mucse_dma_info *dma =3D &hw->dma; struct mucse_mbx_info *mbx =3D &hw->mbx; =20 + hw->ops =3D &rnpgbe_hw_ops; + hw->port =3D 0; + + dma->dma_base_addr =3D hw->hw_addr; + mbx->pf2fw_mbx_ctrl =3D MUCSE_GBE_PFFW_MBX_CTRL_OFFSET; mbx->fwpf_mbx_mask =3D MUCSE_GBE_FWPF_MBX_MASK_OFFSET; =20 diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h b/drivers/net/et= hernet/mucse/rnpgbe/rnpgbe_hw.h index 612f0ba65265..00bf7571bf35 100644 --- a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h +++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h @@ -11,6 +11,8 @@ #define MUCSE_GBE_FWPF_MBX_MASK_OFFSET 0x5700 #define MUCSE_N210_FWPF_CTRL_BASE 0x29400 #define MUCSE_N210_FWPF_SHM_BASE 0x2d900 +/**************** DMA Registers ****************************/ +#define RNPGBE_DMA_AXI_EN 0x0010 /**************** CHIP Resource ****************************/ #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 c6cfb54f7c59..94de1693c4a0 100644 --- a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_main.c +++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_main.c @@ -7,6 +7,7 @@ =20 #include "rnpgbe.h" #include "rnpgbe_hw.h" +#include "rnpgbe_mbx_fw.h" =20 static const char rnpgbe_driver_name[] =3D "rnpgbe"; =20 @@ -28,6 +29,55 @@ static struct pci_device_id rnpgbe_pci_tbl[] =3D { {0, }, }; =20 +/** + * rnpgbe_open - Called when a network interface is made active + * @netdev: network interface device structure + * + * The open entry point is called when a network interface is made + * active by the system (IFF_UP). + * + * Return: 0 on success, negative value on failure + **/ +static int rnpgbe_open(struct net_device *netdev) +{ + return 0; +} + +/** + * rnpgbe_close - Disables a network interface + * @netdev: network interface device structure + * + * The close entry point is called when an interface is de-activated + * by the OS. + * + * Return: 0, this is not allowed to fail + **/ +static int rnpgbe_close(struct net_device *netdev) +{ + return 0; +} + +/** + * rnpgbe_xmit_frame - Send a skb to driver + * @skb: skb structure to be sent + * @netdev: network interface device structure + * + * Return: NETDEV_TX_OK or NETDEV_TX_BUSY + **/ +static netdev_tx_t rnpgbe_xmit_frame(struct sk_buff *skb, + struct net_device *netdev) +{ + dev_kfree_skb_any(skb); + netdev->stats.tx_dropped++; + return NETDEV_TX_OK; +} + +static const struct net_device_ops rnpgbe_netdev_ops =3D { + .ndo_open =3D rnpgbe_open, + .ndo_stop =3D rnpgbe_close, + .ndo_start_xmit =3D rnpgbe_xmit_frame, +}; + /** * rnpgbe_add_adapter - Add netdev for this pci_dev * @pdev: PCI device information structure @@ -68,11 +118,55 @@ static int rnpgbe_add_adapter(struct pci_dev *pdev, } =20 hw->hw_addr =3D hw_addr; + hw->pdev =3D pdev; + err =3D rnpgbe_init_hw(hw, board_type); if (err) { dev_err(&pdev->dev, "Init hw err %d\n", err); goto err_free_net; } + /* Step 1: Send power-up notification to firmware (no response expected) + * This informs firmware to initialize hardware power state, but + * firmware only acknowledges receipt without returning data. Must be + * done before synchronization as firmware may be in low-power idle + * state initially. + */ + err =3D hw->ops->mbx_send_notify(hw, true, mucse_fw_powerup); + if (err) { + dev_warn(&pdev->dev, "Send powerup to hw failed %d\n", err); + dev_warn(&pdev->dev, "Maybe low performance\n"); + } + /* Step 2: Synchronize mailbox communication with firmware (requires + * response) After power-up, confirm firmware is ready to process + * requests with responses. This ensures subsequent request/response + * interactions work reliably. + */ + err =3D mucse_mbx_sync_fw(hw); + if (err) { + dev_err(&pdev->dev, "Sync fw failed! %d\n", err); + goto err_free_net; + } + + netdev->netdev_ops =3D &rnpgbe_netdev_ops; + err =3D hw->ops->reset_hw(hw); + if (err) { + dev_err(&pdev->dev, "Hw reset failed %d\n", err); + goto err_free_net; + } + + err =3D hw->ops->get_perm_mac(hw); + if (err =3D=3D -EINVAL) { + dev_warn(&pdev->dev, "Using random MAC\n"); + eth_random_addr(hw->perm_addr); + } else if (err) { + dev_err(&pdev->dev, "get perm_addr failed %d\n", err); + goto err_free_net; + } + + eth_hw_addr_set(netdev, hw->perm_addr); + err =3D register_netdev(netdev); + if (err) + goto err_free_net; =20 return 0; =20 @@ -141,11 +235,17 @@ static int rnpgbe_probe(struct pci_dev *pdev, const s= truct pci_device_id *id) static void rnpgbe_rm_adapter(struct pci_dev *pdev) { struct mucse *mucse =3D pci_get_drvdata(pdev); + struct mucse_hw *hw =3D &mucse->hw; struct net_device *netdev; + int err; =20 if (!mucse) return; netdev =3D mucse->netdev; + unregister_netdev(netdev); + err =3D hw->ops->mbx_send_notify(hw, false, mucse_fw_powerup); + if (err) + dev_warn(&pdev->dev, "Send powerdown to hw failed %d\n", err); free_netdev(netdev); } =20 @@ -176,6 +276,8 @@ static void rnpgbe_dev_shutdown(struct pci_dev *pdev) =20 rtnl_lock(); netif_device_detach(netdev); + if (netif_running(netdev)) + rnpgbe_close(netdev); rtnl_unlock(); pci_disable_device(pdev); } --=20 2.25.1