From patchwork Mon Apr 14 14:01:22 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Majewski X-Patchwork-Id: 14050473 Received: from mx.denx.de (mx.denx.de [89.58.32.78]) (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 93B2227FD49; Mon, 14 Apr 2025 14:02:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=89.58.32.78 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744639328; cv=none; b=Fp20f4H6pVZNnKYLUqqFXxT0A1ola9xGzw7KgWz3EtiqdGoxN48FBP7DVseL6LEOy+AnBArLfC1Rswk5lk5g3LJisfpe/ztLDoMiBiQvTPv+RAh/cPbx4JmLd6gRrMRJvm28xs72wfszMw4CSz3AcS53M/pSmS6TV2sJxrqDf3U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744639328; c=relaxed/simple; bh=sNefBMxH9d05RBIiV8BbvUq1auotHkfFm+DadS6lVlI=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=OFZpQ+pcbE17GpK4taMOwMyhNeOLY+YDDVC5zy3+v1xBFwyQpXp7Us1e7tBVMr988q2oTzDjdH+9q2eOXyYYXzGcPub0X5eXo6Drv9Pl8b7x3H8mOAvDzBxsjnszJ8E0hEAoTNt6dl6+pQzkQcZCK9tAUzko//yulLDxqfijXVE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=denx.de; spf=pass smtp.mailfrom=denx.de; dkim=pass (2048-bit key) header.d=denx.de header.i=@denx.de header.b=fRECQpnR; arc=none smtp.client-ip=89.58.32.78 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=denx.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=denx.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=denx.de header.i=@denx.de header.b="fRECQpnR" Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 3C875103801B7; Mon, 14 Apr 2025 16:01:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=mx-20241105; t=1744639317; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding; bh=sVSzr9MoLYQLsnfqPt+wdg+ZWOABKxQrKv/DSGRxEPI=; b=fRECQpnRvPqd36QtTIYfN6O/MfPloi9Vjzq9Mjg852cVw1r73K1Aqw8QHAk25dl7cWaEU6 3riWVS4KGgsWH1fyzijljiBAfye/o0avBEcd8dWEZZA95zofZYuWeQbLAQBSKjuaNWrUGw MH1M3F0vqbgT50sZjDxL+3tZLIDDiRYnaTpw32neqEC/VqA7bfkTQqDkqNzxfiGfXN3WI5 9aJVldgVqNW4fqpxYVLabgFZHVaLCtkhQWewJLD0tNqX+dg8Mx829ydNqFXAVKbZjrrpup wfvl59KI5A2Qn3mXnKV6AZhvKDoFLDkqwgH0kF9Y2ON46lKZL4HI6NwnSXNpKw== From: Lukasz Majewski To: Andrew Lunn , davem@davemloft.net, Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo Cc: Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Richard Cochran , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Stefan Wahren , Simon Horman , Lukasz Majewski Subject: [net-next v5 0/6] net: mtip: Add support for MTIP imx287 L2 switch driver Date: Mon, 14 Apr 2025 16:01:22 +0200 Message-Id: <20250414140128.390400-1-lukma@denx.de> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.3 X-Patchwork-Delegate: kuba@kernel.org This patch series adds support for More Than IP's L2 switch driver embedded in some NXP's SoCs. This one has been tested on imx287, but is also available in the vf610. In the past there has been performed some attempts to upstream this driver: 1. The 4.19-cip based one [1] 2. DSA based one for 5.12 [2] - i.e. the switch itself was treat as a DSA switch with NO tag appended. 3. The extension for FEC driver for 5.12 [3] - the trick here was to fully reuse FEC when the in-HW switching is disabled. When bridge offloading is enabled, the driver uses already configured MAC and PHY to also configure PHY. All three approaches were not accepted as eligible for upstreaming. The driver from this series has floowing features: 1. It is fully separated from fec_main - i.e. can be used interchangeable with it. To be more specific - one can build them as modules and if required switch between them when e.g. bridge offloading is required. To be more specific: - Use FEC_MAIN: When one needs support for two ETH ports with separate uDMAs used for both and bridging can be realized in SW. - Use MTIPL2SW: When it is enough to support two ports with only uDMA0 attached to switch and bridging shall be offloaded to HW. 2. This driver uses MTIP's L2 switch internal VLAN feature to provide port separation at boot time. Port separation is disabled when bridging is required. 3. Example usage: Configuration: ip link set lan0 up; sleep 1; ip link set lan1 up; sleep 1; ip link add name br0 type bridge; ip link set br0 up; sleep 1; ip link set lan0 master br0; ip link set lan1 master br0; bridge link; ip addr add 192.168.2.17/24 dev br0; ping -c 5 192.168.2.222 Removal: ip link set br0 down; ip link delete br0 type bridge; ip link set dev lan1 down ip link set dev lan0 down 4. Limitations: - Driver enables and disables switch operation with learning and ageing. - Missing is the advanced configuration (e.g. adding entries to FBD). This is on purpose, as up till now we didn't had consensus about how the driver shall be added to Linux. Links: [1] - https://github.com/lmajewski/linux-imx28-l2switch/commits/master [2] - https://github.com/lmajewski/linux-imx28-l2switch/tree/imx28-v5.12-L2-upstream-RFC_v1 [3] - https://source.denx.de/linux/linux-imx28-l2switch/-/tree/imx28-v5.12-L2-upstream-switchdev-RFC_v1?ref_type=heads Lukasz Majewski (6): dt-bindings: net: Add MTIP L2 switch description ARM: dts: nxp: mxs: Adjust the imx28.dtsi L2 switch description ARM: dts: nxp: mxs: Adjust XEA board's DTS to support L2 switch net: mtip: The L2 switch driver for imx287 ARM: mxs_defconfig: Update mxs_defconfig to 6.15-rc1 ARM: mxs_defconfig: Enable CONFIG_FEC_MTIP_L2SW to support MTIP L2 switch .../bindings/net/nxp,imx28-mtip-switch.yaml | 141 ++ MAINTAINERS | 7 + arch/arm/boot/dts/nxp/mxs/imx28-xea.dts | 56 + arch/arm/boot/dts/nxp/mxs/imx28.dtsi | 8 +- arch/arm/configs/mxs_defconfig | 14 +- drivers/net/ethernet/freescale/Kconfig | 1 + drivers/net/ethernet/freescale/Makefile | 1 + drivers/net/ethernet/freescale/mtipsw/Kconfig | 13 + .../net/ethernet/freescale/mtipsw/Makefile | 3 + .../net/ethernet/freescale/mtipsw/mtipl2sw.c | 1990 +++++++++++++++++ .../net/ethernet/freescale/mtipsw/mtipl2sw.h | 788 +++++++ .../ethernet/freescale/mtipsw/mtipl2sw_br.c | 120 + .../ethernet/freescale/mtipsw/mtipl2sw_mgnt.c | 449 ++++ 13 files changed, 3578 insertions(+), 13 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/nxp,imx28-mtip-switch.yaml create mode 100644 drivers/net/ethernet/freescale/mtipsw/Kconfig create mode 100644 drivers/net/ethernet/freescale/mtipsw/Makefile create mode 100644 drivers/net/ethernet/freescale/mtipsw/mtipl2sw.c create mode 100644 drivers/net/ethernet/freescale/mtipsw/mtipl2sw.h create mode 100644 drivers/net/ethernet/freescale/mtipsw/mtipl2sw_br.c create mode 100644 drivers/net/ethernet/freescale/mtipsw/mtipl2sw_mgnt.c