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[34.12.86.230]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b9084f191b9sm359394666b.67.2026.02.23.14.05.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Feb 2026 14:05:06 -0800 (PST) From: Artem Lytkin To: FUJITA Tomonori , Andrew Lunn , Heiner Kallweit Cc: Trevor Gross , Russell King , Miguel Ojeda , "David S . Miller" , Jakub Kicinski , Paolo Abeni , Eric Dumazet , netdev@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Artem Lytkin Subject: [PATCH net-next 2/2] net: phy: add Rust reference driver for ET1011C Date: Mon, 23 Feb 2026 22:05:02 +0000 Message-ID: <20260223220504.2102-4-iprintercanon@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260223220504.2102-1-iprintercanon@gmail.com> References: <20260223220504.2102-1-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: 8bit Add a Rust implementation of the LSI ET1011C PHY driver, equivalent to the existing C driver in drivers/net/phy/et1011c.c. The driver implements config_aneg and read_status callbacks using the Rust PHY abstraction. The Rust driver can be selected via the ET1011C_RUST_PHY Kconfig option, following the same pattern as AX88796B_RUST_PHY. Signed-off-by: Artem Lytkin --- drivers/net/phy/Kconfig | 9 +++++ drivers/net/phy/Makefile | 6 ++- drivers/net/phy/et1011c_rust.rs | 70 +++++++++++++++++++++++++++++++++ 3 files changed, 84 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..5271898a38f7 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. +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 and behavior are + equivalent to the C driver. Selecting this option builds + the Rust version instead of the C version. + 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-$(CONFIG_DP83TG720_PHY) += dp83tg720.o obj-$(CONFIG_FIXED_PHY) += fixed_phy.o obj-$(CONFIG_ICPLUS_PHY) += icplus.o obj-$(CONFIG_INTEL_XWAY_PHY) += intel-xway.o -obj-$(CONFIG_LSI_ET1011C_PHY) += et1011c.o +ifdef CONFIG_ET1011C_RUST_PHY + obj-$(CONFIG_LSI_ET1011C_PHY) += et1011c_rust.o +else + obj-$(CONFIG_LSI_ET1011C_PHY) += et1011c.o +endif obj-$(CONFIG_LXT_PHY) += lxt.o obj-$(CONFIG_MARVELL_10G_PHY) += marvell10g.o obj-$(CONFIG_MARVELL_PHY) += marvell.o diff --git a/drivers/net/phy/et1011c_rust.rs b/drivers/net/phy/et1011c_rust.rs new file mode 100644 index 000000000000..57aa50caca47 --- /dev/null +++ b/drivers/net/phy/et1011c_rust.rs @@ -0,0 +1,70 @@ +// 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::*, + uapi, +}; + +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", +} + +const ET1011C_STATUS_REG: C22 = C22::vendor_specific::<0x1A>(); +const ET1011C_CONFIG_REG: C22 = C22::vendor_specific::<0x16>(); + +const ET1011C_SPEED_MASK: u16 = 0x0300; +const ET1011C_GIGABIT_SPEED: u16 = 0x0200; +const ET1011C_TX_FIFO_MASK: u16 = 0x3000; +const ET1011C_TX_FIFO_DEPTH_16: u16 = 0x1000; +const ET1011C_GMII_INTERFACE: u16 = 0x0002; +const ET1011C_SYS_CLK_EN: u16 = 0x0010; + +const BMCR_FULLDPLX: u16 = uapi::BMCR_FULLDPLX as u16; +const BMCR_SPEED100: u16 = uapi::BMCR_SPEED100 as u16; +const BMCR_SPEED1000: u16 = uapi::BMCR_SPEED1000 as u16; +const BMCR_ANENABLE: u16 = uapi::BMCR_ANENABLE as u16; +const BMCR_RESET: u16 = uapi::BMCR_RESET as u16; + +struct PhyET1011C; + +#[vtable] +impl Driver for PhyET1011C { + const NAME: &'static CStr = c"ET1011C"; + const PHY_DEVICE_ID: DeviceId = DeviceId::new_with_model_mask(0x0282f014); + + fn config_aneg(dev: &mut phy::Device) -> Result { + let ctl = dev.read(C22::BMCR)?; + let ctl = ctl & !(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 | BMCR_ANENABLE); + dev.write(C22::BMCR, ctl | BMCR_RESET)?; + dev.genphy_config_aneg() + } + + fn read_status(dev: &mut phy::Device) -> Result { + dev.genphy_read_status::()?; + + let val = dev.read(ET1011C_STATUS_REG)?; + if (val & ET1011C_SPEED_MASK) == ET1011C_GIGABIT_SPEED { + let cfg = dev.read(ET1011C_CONFIG_REG)?; + let cfg = 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) + } +} -- 2.43.0