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[34.91.49.30]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-65eab9a077asm3771023a12.4.2026.02.24.08.49.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Feb 2026 08:49:27 -0800 (PST) From: Artem Lytkin To: Andrew Lunn , Heiner Kallweit , Russell King , FUJITA Tomonori , Trevor Gross Cc: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Miguel Ojeda , netdev@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Artem Lytkin Subject: [PATCH net-next v3 1/2] rust: net: phy: add speed() getter to Device Date: Tue, 24 Feb 2026 16:49:25 +0000 Message-ID: <20260224164926.1760-2-iprintercanon@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260224164926.1760-1-iprintercanon@gmail.com> References: <20260224043211.1747-1-iprintercanon@gmail.com> <20260224164926.1760-1-iprintercanon@gmail.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 Content-Type: text/plain; charset="utf-8" Add a speed() getter to phy::Device that reads the current link speed from the phy_device struct. This is needed by PHY drivers that must detect speed changes in their read_status callback. Signed-off-by: Artem Lytkin --- rust/kernel/net/phy.rs | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/rust/kernel/net/phy.rs b/rust/kernel/net/phy.rs index 3ca99db5cccf..3812f8fd3e49 100644 --- a/rust/kernel/net/phy.rs +++ b/rust/kernel/net/phy.rs @@ -158,6 +158,14 @@ pub fn is_autoneg_completed(&self) -> bool { bit_field.get(15, 1) =3D=3D AUTONEG_COMPLETED } =20 + /// Gets the current link speed. + pub fn speed(&self) -> i32 { + let phydev =3D self.0.get(); + // SAFETY: The struct invariant ensures that we may access + // this field without additional synchronization. + unsafe { (*phydev).speed } + } + /// Sets the speed of the PHY. pub fn set_speed(&mut self, speed: u32) { let phydev =3D self.0.get(); --=20 2.43.0 From nobody Sun Apr 5 19:43:16 2026 Received: from mail-ej1-f45.google.com (mail-ej1-f45.google.com [209.85.218.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D63363A9632 for ; 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[34.91.49.30]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-65eab9a077asm3771023a12.4.2026.02.24.08.49.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Feb 2026 08:49:28 -0800 (PST) From: Artem Lytkin To: Andrew Lunn , Heiner Kallweit , Russell King , FUJITA Tomonori , Trevor Gross Cc: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Miguel Ojeda , netdev@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Artem Lytkin Subject: [PATCH net-next v3 2/2] net: phy: add Rust reference driver for ET1011C Date: Tue, 24 Feb 2026 16:49:26 +0000 Message-ID: <20260224164926.1760-3-iprintercanon@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260224164926.1760-1-iprintercanon@gmail.com> References: <20260224043211.1747-1-iprintercanon@gmail.com> <20260224164926.1760-1-iprintercanon@gmail.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 Content-Type: text/plain; charset="utf-8" Add a Rust reference driver for the LSI ET1011C PHY, following the pattern established by the existing Rust Asix PHY driver (ax88796b_rust.rs). Unlike the C driver which uses a custom config_aneg that manually clears BMCR bits and writes BMCR_RESET without polling, this driver uses the soft_reset callback with genphy_soft_reset(). This properly polls the self-clearing BMCR_RESET bit and handles both autoneg and forced mode, following current best practices. The read_status callback detects speed changes and reconfigures the GMII interface and TX FIFO when switching to gigabit, matching the C driver's functionality. Signed-off-by: Artem Lytkin --- drivers/net/phy/Kconfig | 9 +++++ drivers/net/phy/Makefile | 6 ++- drivers/net/phy/et1011c_rust.rs | 69 +++++++++++++++++++++++++++++++++ 3 files changed, 83 insertions(+), 1 deletion(-) create mode 100644 drivers/net/phy/et1011c_rust.rs diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 7b73332a13d9..41abf13662e6 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -254,6 +254,15 @@ config LSI_ET1011C_PHY help Supports the LSI ET1011C PHY. =20 +config ET1011C_RUST_PHY + bool "Rust reference driver for LSI ET1011C PHY" + depends on RUST_PHYLIB_ABSTRACTIONS && LSI_ET1011C_PHY + help + Uses the Rust reference driver for LSI ET1011C PHY + (et1011c_rust.ko). The features are equivalent. + It supports the LSI ET1011C PHY. If unsure, + say N. + config MARVELL_PHY tristate "Marvell Alaska PHYs" help diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 3a34917adea7..491469457a67 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -62,7 +62,11 @@ obj-$(CONFIG_DP83TG720_PHY) +=3D dp83tg720.o obj-$(CONFIG_FIXED_PHY) +=3D fixed_phy.o obj-$(CONFIG_ICPLUS_PHY) +=3D icplus.o obj-$(CONFIG_INTEL_XWAY_PHY) +=3D intel-xway.o -obj-$(CONFIG_LSI_ET1011C_PHY) +=3D et1011c.o +ifdef CONFIG_ET1011C_RUST_PHY + obj-$(CONFIG_LSI_ET1011C_PHY) +=3D et1011c_rust.o +else + obj-$(CONFIG_LSI_ET1011C_PHY) +=3D et1011c.o +endif obj-$(CONFIG_LXT_PHY) +=3D lxt.o obj-$(CONFIG_MARVELL_10G_PHY) +=3D marvell10g.o obj-$(CONFIG_MARVELL_PHY) +=3D marvell.o diff --git a/drivers/net/phy/et1011c_rust.rs b/drivers/net/phy/et1011c_rust= .rs new file mode 100644 index 000000000000..93dbf9586da3 --- /dev/null +++ b/drivers/net/phy/et1011c_rust.rs @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0+ +// Copyright (C) 2026 Artem Lytkin + +//! Rust LSI ET1011C PHY driver +//! +//! C version of this driver: [`drivers/net/phy/et1011c.c`](./et1011c.c) + +use kernel::{ + net::phy::{self, reg::C22, DeviceId, Driver}, + prelude::*, +}; + +kernel::module_phy_driver! { + drivers: [PhyET1011C], + device_table: [ + DeviceId::new_with_driver::() + ], + name: "rust_et1011c_phy", + authors: ["Artem Lytkin "], + description: "Rust LSI ET1011C PHY driver", + license: "GPL", +} + +// Vendor-specific registers +const ET1011C_STATUS_REG: C22 =3D C22::vendor_specific::<0x1A>(); +const ET1011C_CONFIG_REG: C22 =3D C22::vendor_specific::<0x16>(); + +// ET1011C status register fields +const ET1011C_SPEED_MASK: u16 =3D 0x0300; +const ET1011C_GIGABIT_SPEED: u16 =3D 0x0200; + +// ET1011C config register fields +const ET1011C_TX_FIFO_MASK: u16 =3D 0x3000; +const ET1011C_TX_FIFO_DEPTH_16: u16 =3D 0x1000; +const ET1011C_GMII_INTERFACE: u16 =3D 0x0002; +const ET1011C_SYS_CLK_EN: u16 =3D 0x0010; + +struct PhyET1011C; + +#[vtable] +impl Driver for PhyET1011C { + const NAME: &'static CStr =3D c"ET1011C"; + const PHY_DEVICE_ID: DeviceId =3D DeviceId::new_with_model_mask(0x0282= f014); + + fn soft_reset(dev: &mut phy::Device) -> Result { + dev.genphy_soft_reset() + } + + fn read_status(dev: &mut phy::Device) -> Result { + let old_speed =3D dev.speed(); + dev.genphy_read_status::()?; + + if old_speed !=3D dev.speed() { + let val =3D dev.read(ET1011C_STATUS_REG)?; + if (val & ET1011C_SPEED_MASK) =3D=3D ET1011C_GIGABIT_SPEED { + let cfg =3D dev.read(ET1011C_CONFIG_REG)?; + let cfg =3D cfg & !ET1011C_TX_FIFO_MASK; + dev.write( + ET1011C_CONFIG_REG, + cfg | ET1011C_GMII_INTERFACE + | ET1011C_SYS_CLK_EN + | ET1011C_TX_FIFO_DEPTH_16, + )?; + } + } + + Ok(0) + } +} --=20 2.43.0