Ethtool read phy register.

• Ethtool read phy register Changes made using ethtool are runtime changes and not persistence changes. These functions are guaranteed not to be called from interrupt time, so it is safe for them to block, waiting for an interrupt to signal the operation is complete Dec 9, 2020 · Then users would need to use the Extended Address register. 6以上通用。 将下面代码编译后，将可执行文件a. 简介 在调试网口驱动的过程中发现phy芯片的驱动框架结构还有点复杂，不仔细研究的话还不好搞懂，另外百度到的资料也不够全面，这篇就总结梳理一下这方面的知识。 Nov 19, 2024 · 沁恒国产以太网phy芯片：高性能替代方案助力国产化升级在全球芯片供应链波动和国产化替代需求日益迫切的背景下，沁恒微电子（wch）凭借其自主研发的以太网phy芯片系列，为工业控制、消费电子、物联网等领域提供了高性价比、高兼容性的国产替代方案。 Mar 13, 2018 · 使用ioctl命令时，可以看到上述两个命令的存在， 在头文件 include/linux/sockios. 大多数网络设备由一组寄存器组成，这些寄存器提供到MAC层的接口，MAC层通过PHY与物理连接通信. Oct 28, 2024 · PHY状态管理：PHY设备状态机负责处理PHY的连接、断开、重启和功耗等状态。phy_ethtool_get_settings() / phy_ethtool_set_settings()：用于获取和设置PHY的链路参数。PHY扫描与连接：在驱动中，通过phy_connect函数扫描和连接PHY设备。_phy初始化流程 ETHTOOL_MSG_PSE_SET and ETHTOOL_MSG_PSE_GET for PHY-controlled PoE and PSE settings. 6以上通用。将下面代码编译后，将可执行文件a. Add phylib support for the Marvell Alaska X 10 Gigabit PHY (MV88X3310). 1000baseT/Full. ) mii-tool – Deprecated. 7k次，点赞3次，收藏21次。本文介绍如何利用ethtool工具检查及调整网卡工作状态，包括速率与双工模式等参数，并通过phyreg工具读写PHY寄存器实现更深层次的网络设备管理。 ETHTOOL(8) System Manager's Manual ETHTOOL(8) NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool -h|--help ethtool Mar 23, 2020 · Accessing ethernet phy driver from linux user space - Stack Overflow . 确定您要读取的网络接口名称，例如`eth0`。 2. The platform code can either register the fixup using phy_register_fixup(): int phy_register_fixup(const char *phy_id, u32 phy_uid, u32 phy_uid_mask, int (*run)(struct phy_device *)); Or using one of the two stubs, phy_register_fixup_for_uid() and: phy_register_fixup_for_id(): int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask, int 下面代码描述了在用户层访问smi／mdio总线， 读写phy芯片寄存器的通用代码。Linux内核2. 4. -d--register-dump Retrieves and prints a register dump for the specified ethernet device. node should be the DT node which contains the network phy property, fixed link properties, and will also contain the sfp property. the solution is only working, when the phys are configured as Ethernet devices in the Linux. However, I have no idea of the implications on the running of the ethernet at the Linux level, probably just stops working. com. Aug 31, 2023 · Part Number: PROCESSOR-SDK-AM62X Hello, Let me confirm about below. ETHTOOL_MSG_PLCA_GET_CFG, ETHTOOL_MSG_PLCA_SET_CFG and ETHTOOL_MSG_PLCA_GET_STATUS to set the PLCA (Physical Layer Collision Avoidance) parameters. The mii_id is the address on the bus for the PHY, and regnum is the register number. Feb 2, 2023 · 通过理解phy控制器驱动的功能和特性，并结合调试工具和技巧，可以有效地定位和解决与phy控制器相关的问题。对于开发人员来说，熟练掌握phy控制器驱动的调试技巧是非常重要的，这有助于提高驱动的质量和稳定性。 Dec 11, 2023 · This guide will walk you through the usage of ethtool, from basic to advanced, to help you manage and troubleshoot your network interfaces. 3w次，点赞42次，收藏215次。PHY篇以太网PHY标准寄存器分析PHY是IEEE802. PHY寄存器22. Every phy is different. 32] range can be accessed directly. ethtool -t|--test devname then ethtool dumps the raw register data to stdout. This PHY provides data transmission over fiber-optic as well as Twinax copper links. You signed in with another tab or window. (Register dump incomprehensible, so checking raw register values not possible. bit = ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,}, * phy_read_mmd - Convenience function for reading a register * Unlocked helper function which allows a PHY These can be read in several ways depending on the type of the information actually needed. Is register 00H the first two bytes "01 02"? And what is the byte order? And more important is this the right way to read the registers? PHY Abstraction Layer¶ Purpose¶. From inspection of the ixgbe source code we've found some examples (see 1st message) but we'd like more information regarding these specific PHY registers. -R, --reset Reset the MII to its default configuration. Whether or not it is installed by default will depend on the distribution in use. -V, --version Display program version information. Our PHY Addr is 0x0c. 上图来自 瑞昱半导体 (realtek) 的 rtl8201f 系列网卡 phy 芯片手册。 按osi 7层网络模型划分，网卡phy 芯片(图中的rtl8201f)位于物理层，对应的软件层就是本文讨论的 phy 驱动层；而 mac 位于 数据链路层，也是通常软件上所说的网卡驱动层，它不是本文的重点，不做展开。 Nov 16, 2023 · 例如，在Linux操作系统中，可以使用ethtool工具来获取PHY寄存器的信息或者改变寄存器的设置。网络管理员可以通过这种方式来手动解决网络连接问题，或者调整网络设备的工作模式以适应特定的网络环境。 ArrayList中的一些小细节@JDK8 该变量用于记录ArrayList的版本号,不可被序列化，每次对ArrayList操作都会修改此版本号，为ArrayList提供FastFail功能；可是，在每次操作中都操作此变量，会造成一个结果就是该变量会迅速变化，很快超过Integer. 5-2ns delay * PHY_INTERFACE_MODE Sep 28, 2023 · 使用`ethtool`命令读取PHY寄存器的具体步骤如下： 1. MDIO 原理. 读取寄存器值：要读取寄存器的值，可以使用cat命令读取register文件。例如，通过以下命令读取PHY地址为0的PHY寄存器1的值： mii_id is the address on the bus for the PHY, and regnum is the register number. bus, phydev->mdio. Advertised link modes: 10baseT/Half 10baseT/Full. Does not support Gigabit speeds. Uboot 中通过工具访问 MDIO. Dec 2, 2022 · Add a driver for the motorcomm yt8531 gigabit ethernet phy. Mar 30, 2018 · First you need the hardware information. How do I then interpret the dump. Apr 30, 2023 · Control Register (Register 0) 寄存器 0 是 PHY 控制寄存器，通过 Control Register 可以对 PHY 的主要工作状态进行设置。应该保证控制寄存器每个位的默认值，以便在没有管理干预的情况下，上电或复位时 PHY 的初始状态为正常操作状态。Control Register 的每一位完成的功能见下。 Jul 20, 2021 · 本文档展示了如何在Linux应用层通过ioctl接口读写PHY芯片的配置。代码示例中，首先检查网卡驱动是否支持MDIO接口，并确定PHY地址和设备号，然后使用ethtool或ioctl方式通过MDIO接口读写PHY寄存器。示例代码演示了读取和写入操作，提供了一种与PHY芯片交互的方法。 下面代码描述了在用户层访问smi／mdio总线， 读写phy芯片寄存器的通用代码。Linux内核2. These functions are guaranteed not to be called from interrupt time, so it is safe for them to block, waiting for an interrupt to signal the operation is complete Part Number: TDA4VM Hi, How is it possible to read and write to PHY register via MDIO, which is connected to the CPSW with the ETHFW running on RTOS. So, let’s dive in and start mastering the ethtool command in Linux! Jan 22, 2021 · phy 驱动与 switch 驱动 phy 驱动 phy 与 cpu 的硬件连接 一般为 MAC-PHY 模式： MAC -PHY 之间使用 RGMII /MII 接口连接，用于传输数据。 SMI 接口，通常为 MDIO 接口或 I2C接口，用于读写PHY上面的寄存器。 - MAC-MAC 模式下一般要使用 fixed-link - switch 驱动一般注册为平台驱动 May 8, 2022 · For more details like ethtool -m output for these modules and PHY register dumps, see the next post. ethtool --set-phy-tunable devname then ethtool dumps the raw register data to stdout. For example, the DP83867 on the GESI board. Product Forums 23. Forums 5. 1 Generator usage only permitted with license. For example a user can be use the ethtool support to get statistics: e. Supports auto-negotiation: Yes. Reload to refresh your session. addr, regnum); } /** * phy_write - Convenience function for writing a given PHY register * @phydev: the phy_device struct * @regnum: register number to write * @val: value to write to @regnum * * NOTE: MUST NOT be called 一些高端PHY芯片支持动态速率调整，当PHY检测到链路的误码率较高时，驱动可以在后台调整PHY的速率。此外，内核中也提供了标准的PHY驱动框架，比如`phy_polling()`和`phy_state_machine()`，用于自动管理链路检测、事件通知等工作。 Mar 29, 2024 · 可以用一下两种方法来获取 Linux 中的以太网 PHY 寄存器数据方法 1: 使用ETHTOOL如果 ethtool 在内核中不可用，则通过配置用户空间package，增加ethtool工具并重新编译；,21ic电子技术开发论坛 z To Read a C45 Register C22 Perform: y Write FN = Address & EEEEE to C22 Register 13 on Port PPPPP y Write Address AAAAAAAAAAAAAAAA to C22 Register 14 on Port PPPPP y Write FN = Data & EEEEE to C22 Register 13 on Port PPPPP y Read Register From C22 Register 14 on Port PPPPP z Read Operation Takes 4 Steps Feb 13, 2021 · If the PHY supported more than 32 registers, the vendor could define one of the vendor-specified registers as a "page select" register to select different banks of 32 vendor-specified registers. These functions are guaranteed not to be called from interrupt time, so it is safe for them to block, waiting for an interrupt to signal the operation is complete Dec 26, 2022 · 1、以太网PHY标准寄存器分析PHY是IEEE802. Sep 28, 2022 · 文章浏览阅读3. So, first we need to write the value 0x001f to PHY register REGCR (or 0x0d). The ethtool utility has a great many options for gathering information. . This phy is able to operate at 10G, 1G, 100M and 10M speeds, and only supports Clause 45 accesses. Most network devices consist of set of registers which provide an interface to a MAC layer, which communicates with the physical connection through a PHY. 30 等信息。关闭网卡对收到的数据包的校验功能，请输入： ethtool -K eth0 rx off Jun 25, 2022 · 除了通信时得外，每个出厂前还有厂家的唯一标识，因为phy都遵循国际标准，所以寄存器和两个寄存器就负责存储该信息，以为例，如下图： 会自动扫描新添加的，其机制就是扫描寄存器，若有返回值，则说明存在，将其添加到总线上，具体源码实现如下： 3. Jul 5, 2023 · . 目录. Thank u. On the TI phy used on the ZCU102, this can be seen below: These instructions mirror, the ones in the TI PHY datasheet page 39. sadowski@intel. link training, auto-negotiation). First you cannot write to the SOR1 register it is read only. We evaluated the Marvell 10G driver and at803x you suggested. This is register 0x4a101008 according to the TRM, I think, since the offset is 8h. Jan 10, 2013 · mdiobus_read - Convenience function for reading a given MII mgmt register : the mii_bus struct : the phy address : register number to read. For ease of use, users should use utilities such as mii dump in u-boot or similar in Linux too. We would like to show you a description here but the site won’t allow us. -e --eeprom-dump Oct 31, 2023 · I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. Generated on 2024-Apr-24 from project linux revision v6. See full list on github. MAXVALUE;那么，当其发生溢出时会不会就不正确了呢，答案时否； 当 Jul 27, 2022 · patch v4: Hi Andrew,Jakub Thanks very much and based on your comments we modified the patch v4 as below. com Most of the Ethernet PHY support multi-functions and provide much more flexible configure capability to fine tune timing or function enable by configure their registers. The ethtool is a utility for displaying and configuring Ethernet card driver and hardware settings. -e --eeprom-dump * @phydev: the phy_device struct */ static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev) { return phydev->is_pseudo_fixed_link; } int phy_save_page(struct phy_device *phydev); int phy_select_page(struct phy_device *phydev, int page); int phy_restore_page(struct phy_device *phydev, int oldpage, int ret); int phy_read_paged Apr 1, 2015 · 最关键的函数就是它，也就是本文的核心，这里是从寄存器中通过mdiobus的read方法来从phy中获取phy id，但是这里并没有获取到phy_id ，这寄存器都是以太网的通用寄存器. The 2-Clause Aug 31, 2018 · i want to access ethernet phy driver from linux user space, In uboot we can directly access phy registers using mii commands similarly i want to read and write phy registers from linux user spac Mar 9, 2023 · I figured out how it works: The basic standard MDIO address consists of 5 bits and therefore only the [0. Ethernet PHY registers tool provide a simple way to read/write PHY registers by MDC/MDIO. Usage: adintool. 专业术语. -r, --restart Restart autonegotiation. Nov 6, 2023 · 概述. That is what the phy_read_paged and phy_write_paged functions do. out 重命名为mdio mdio eth0 1 读取phy寄存器1的数值 mdio eth0 0 0x1120 … Jun 14, 2015 · Linux 的一个显著特点就是其强大的网络功能，Linux 几乎支持所有的网络协议，并在这些协议基础上提供了丰富的应用。对 Linux 网络管理的重要性不言而喻，这些管理依赖于网络工具，比如最常用的 ifconfig,route,ip,ethtool 等，其中 ethtool 提供了强大的网卡及网卡 Feb 27, 2014 · David, what about enabling ethtool to read/write from/to the PHY registers (via passing PHY ID and register number)? I'm trying to get ICplus IP175D running and it has lots of registers, that I would like to look at dynamically. NOTE: MUST NOT be called from interrupt context, because the bus read/write functions may wait for an interrupt to conclude the operation. mii レジスタにアクセスするためには、mdcに正しいクロックを出力する必要があります。 クロックの周波数を決めるために、miimoderレジスタにmdc生成用の分周率を設定します。 Nov 2, 2023 · 平台声明：该文观点仅代表作者本人，搜狐号系信息发布平台，搜狐仅提供信息存储空间服务。 Nov 2, 2023 · 平台声明：该文观点仅代表作者本人，搜狐号系信息发布平台，搜狐仅提供信息存储空间服务。 Jul 30, 2011 · No idea. Although i used the ethtool -d command, but it is not working in the linux. 经常使用的工具是ethtool, ethtool可以详细的描述MAC和PHY的相关信息，包括寄存器的配置，相关的统计。 mii_id is the address on the bus for the PHY, and regnum is the register number. * I'm trying to read ethernet PHY register value on EVM(AM62-SK Rev E3) via "ethtool". out 重命名为mdiomdio eth0 1 读取phy寄存器1的数值mdio eth0 0 0x1120 将0x1120写入 phy寄存器1eth0 为mac层控制器的名称， 一般为eth0 或mgmt0。 We would like to show you a description here but the site won’t allow us. ethtool -s fm1-mac3 autoneg off speed 1000 duplex full No “rx_crc_errors_phy” 描述在物理层（PHY）接收到的数据包中检测到的循环冗余校验（CRC）错误。PHY: 物理层（Physical Layer），是OSI模型中的第一层，负责物理介质上的数据传输。这两个都是物理层的错误，和网线，接口的关系比较密切。 ethtool --phy-statistics devname. Definition at line 261 of file mdio_bus. For devices that offer additional registers beyond the basic standard, there is an MDIO Manageable Device (MMD) indirect method (defined in IEEE 802. err = phy_write_mmd(phydev, DP83822_DEV_ADDR, DP83825_SOR1_ADDR, value ); Linux/DP83867IR: Zynq with DP83867IR PHY - Configuration Issue - Unable to receive data correctly - Register Help Usage: adintool. g. 4节有介绍，但不涉及所有的寄存器，个别寄存器需要到其它章节中看，当然，文档里面也提到该在哪里找到哪个寄存器。 Linux内核抽象出读写的函数phy_read和phy_write。在驱动中直接调用是没有问题的，当然，这需要MDIO等一切就绪后。 Nov 24, 2023 · ethtool -A tx off eth0; 操作完毕后，可输入ethtool -a eth0，查看tx模块是否已被停止。查看网卡eth0采用了何种驱动，请输入： ethtool -i eth0; 操作完毕后，显示 driver: bnx2；version: 1. ETHTOOL(8) System Manager's Manual ETHTOOL(8) NAME top ethtool - query or control network driver and hardware settings SYNOPSIS top Mar 4, 2025 · Linux 下smi/mdio总线通信 韩大卫@吉林师范大学 下面代码是在用户层访问smi／mdio总线， 读写phy芯片寄存器的通用程序。Linux内核2. Email: BuddyZhang1 buddy. You signed out in another tab or window. com> This patch adds support for 'ethtool -m' command which displays information about (Q)SFP+ module plugged into NIC's cage. Oct 24, 2022 · Use the following syntax: “mii dump {PHY ID} {register address (0-5)}” PHYtool: This tool is used post-boot. The length and offset Jan 17, 2017 · 文章浏览阅读9. 2k次。Linux+arm 网卡故障调试：ethtool&phy寄存器读写两个工具一个是ethtool工具，一个是源码编译的可以读phy寄存器的工具phyreg。 Dec 19, 2023 · 文章浏览阅读1. zhang@aliyun. May 14, 2013 · mdcの出力. PLease provide your help/support. But in my case they are connected directly to the external switch and are not used by Linux. bin ethtool --set-phy-tunable devname then ethtool dumps the raw register data to stdout. Oct 31, 2019 · 在Linux网络运维中，理解并掌握网络诊断工具是至关重要的。Linux网络诊断命令如`ethtool`和`netstat`是网络运维人员必备的技能，它们提供了一手的网络状况洞察，有助于快速定位和解决问题，提升系统的可靠性和效率。 Apr 30, 2023 · 文章浏览阅读8k次，点赞10次，收藏60次。在调试网口驱动的过程中发现phy芯片的驱动框架结构还有点复杂，不仔细研究的话还不好搞懂，另外百度到的资料也不够全面，这篇就总结梳理一下这方面的知识。 Mar 30, 2017 · Linux phy system. For the most part, flags can be zero; these flags are passed to the phy_attach_direct() inside this function call if a PHY is specified in the DT node node. sh <command> [args] setup - setup phytool and ethtool required for demo WARNING: will override system tools dump_regs <eth> - show all reg values WARNING: some registers will be cleared on read phy_read_mmd <eth> <reg-addr> - read value from a MMD register phy_write_mmd <eth> <reg-addr> <val> - write value to MMD register cable_diagnostics <eth> - run cable diagnostics on cable May 18, 2022 · */ static inline int phy_read(struct phy_device *phydev, u32 regnum) { return mdiobus_read(phydev->mdio. Note: The post also provides a reference to ConnectX-3/ConnectX-3 Pro counters that co-exist for the mlx4 driver (see notes below). There is no magic to it. Dec 16, 2022 · 1. I suspect you will need to set up a register somewhere in the driver, not aware of any tools that will do that for you. License. You need to read the datasheet for the chip. err = phy_write_mmd(phydev, DP83822_DEV_ADDR, DP83825_SOR1_ADDR, value ); Linux/DP83867IR: Zynq with DP83867IR PHY - Configuration Issue - Unable to receive data correctly - Register Help PHY Abstraction Layer¶ Purpose¶. c. This tool is already integrated into TI SDK’s but can be downloaded by typing the following “sudo apt-get install -y net-tools”. Oct 12, 2017 · 文章浏览阅读5. Ethtool doesn't tell me too much mii_id is the address on the bus for the PHY, and regnum is the register number. These functions are guaranteed not to be called from interrupt time, so it is safe for them to block, waiting for an interrupt to signal the operation is complete Feb 2, 2025 · #### 使用`ethtool`工具进行简单交互 在应用层面上，可以利用`ethtool`这一强大网络配置工具来进行基本的MDIO访问而不必深入到驱动开发层面： ```bash sudo ethtool -i eth0 # 查看网卡eth0使用的驱动信息 sudo ethtool --phy-write eth0 19 0x1A 0x7F # 向PHY地址19, 寄存器0x1A写入数据0x7F Aug 8, 2024 · 本资料主要针对bcm phy寄存器中的通用寄存器部分进行分析，对于理解和调试以太网接口的初学者具有很大的指导价值。 首先，我们要理解phy寄存器的作用。每个phy芯片都有多个寄存器，这些寄存器存储了关于网络连接 Mar 15, 2024 · 具体来说，mdio目录下的register文件可用于对寄存器进行读写操作，而mdio目录下的phy_id和address文件则用于查询和配置物理端口的ID和地址。 3. 3中定义的一个标准模块，STA（station management entity，管理实体，一般为MAC或CPU）通过SMI（Serial Manage Interface）对PHY的行为、状态进行管理和控制，而具体管理和控制动作是通过读写PHY内部的寄存器实现的。 Aug 25, 2018 · 1、总结： 使用ethtool 可以查看端口的phy配置 2、显示端口配置 [root@localhost zhou]# ethtool ens33Settings for ens33: Supported ports: [ TP ] Supported link modes: 10baseT/Ha 使用ethtool显示硬件PHY信息 - 七连长 - 博客园 实现phy device处理相关的接口config_init、config_aneg、read_status、ack_interrupt、config_intr、did_interrupt、match_phy_device、ts_info、hwtstamp、rxtstamp、txtstamp、set_wol、get_wol 其中config_init主要是对phy device进行一些初始化配置； config_aneg、read_status主要用于设置phy device的自适 MII即媒体独立接口，也叫介质无关接口。 它包括一个数据接口，以及一个MAC和PHY之间的管理接口(图1)。 数据接口包括分别用于发送器和接收器的两条独立信道。每条信道都有自己的数据、时钟和控制信号。MII数据接口… If used twice, also display raw MII register contents. h，定义如下： #define SIOCETHTOOL 0x8946 /* Ethtool Oct 31, 2023 · I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. using: ethtool-d ethX Sep 19, 2022 · Linux 操作系统下ethtool 命令介绍和使用案例ethtool 命令介绍 是一个用于查询和设置以太网卡参数的命令行工具。 它可以用于获取网卡的配置信息、驱动信息、统计数据，以及修改一些网络接口的设置，如速率、双工模式和自动协商等text其中， 是网络接口的名称，例如 、 等#查询网卡基本设置root@rke2 Feb 20, 2021 · Add basic support for the Marvell 88X2222 multi-speed ethernet transceiver. Now the DP83620 registers are 16 bits. “rx_crc_errors_phy” 描述在物理层（PHY）接收到的数据包中检测到的循环冗余校验（CRC）错误。PHY: 物理层（Physical Layer），是OSI模型中的第一层，负责物理介质上的数据传输。这两个都是物理层的错误，和网线，接口的关系比较密切。 Dec 23, 2023 · Hi , I have used the patched and now iam able to successfully modify the phy registers at the OS level using the phytool. Nov 17, 2021 · 为了降成本，千兆PHY改为了百兆PHY，Marvell 88Q2112换成了88Q1010，驱动大同小异，虽然有厂家提供的驱动源码，但是调试过程中也踩了不少坑，本文主要是记录在J3平台(linux)上调试88Q1010驱动的过程，同时也总结了关于MAC、RGMII、PHY等相关基础知识。 We would like to show you a description here but the site won’t allow us. Then you can access the phy. When raw is enabled, then ethtool dumps the raw Nov 29, 2024 · → If there is no MDIO access to the SGMII PHY or if SFPs are used, then the phy-mode should be set to sgmii and fixed link node should be used instead of phy node. It's not guaranteed any valid answer from PHY while PHY communication can even hang. Kernel 中通过源码访问 MDIO It's not guaranteed any valid answer from PHY while PHY communication can even hang. 2. After booting up linux, I used following command, but output value is a little bit strange. All counters listed here are available via ethtool starting with MLNX_OFED 4. In the MDIO PHY_ALIVE register, I read 0x0. Dear Dave, Thanks for the reply. 9-rc5-36-g9d1ddab261f3 Powered by Code Browser 2. Read with ethtool -e enp2s0f0 raw on > eeprom. GitHub - wkz/phytool: Linux MDIO register access . I get a dump of hex bytes. I am also using the following command to change the interface settings for the OPtical to work, and it is working fine. sh < command > [args] setup -setup phytool and ethtool required for demo WARNING: will override system tools dump_regs < eth >-show all reg values WARNING: some registers will be cleared on read phy_read_mmd < eth > < reg-addr >-read value from a MMD register phy_write_mmd < eth > < reg-addr > < val >-write value to MMD When raw is enabled, then ethtool dumps the raw register data to stdout. Uboot 中通过源码访问 MDIO. 既然没有从寄存器中获取到phy_id，因此phy_device_create也不会在mii bus数据结构中创建phy_device， Aug 2, 2024 · 概述. 3中定义的一个标准模块，STA(station management entity，管理实体，一般为MAC或CPU)通过SMI(Serial Manage Interface)对PHY的行为、状态进行管理和控制，而具体管理和控制动作是通过读写PHY内部的寄存器实现的。 Oct 2, 2017 · From: Filip Sadowski <filip. Examples # miitool r eth0 1 # miitool w eth0 0 0x1000. 上图来自 瑞昱半导体 (realtek) 的 rtl8201f 系列网卡 phy 芯片 手册。 按 osi 7层网络模型 划分，网卡phy 芯片(图中的rtl8201f)位于物理层，对应的软件层就是本文讨论的 phy 驱动层；而 mac 位于 数据链路层，也是通常软件上所说的网卡驱动层，它不是本文的重点，不做展开。 Mar 6, 2018 · 最近，在调试基于Freescale IMX6UL板子的以太网口时，遇到了一个奇怪的问题：网口插拔时，系统检测不到Link Down、Link UP事件。并且，在使用ifconfig eth0 up，然后再ifconfig eth0 down时，会提示 Dec 23, 2023 · Hi Thank u for the reply, Changes as indicated are made, Please note that iam able to read/modify phy registers at uboot, however i want to. 4k次，点赞2次，收藏3次。PHY子系统是Linux内核中管理硬件物理层的组件，负责控制器和PHY设备的驱动。该子系统提供了如phy_create、phy_destroy等核心API，用于设备的创建、销毁以及与硬件的交互。 The values of phy_interface_t must be understood from the perspective of the PHY device itself, leading to the following: * PHY_INTERFACE_MODE_RGMII: the PHY is not responsible for inserting any internal delay by itself, it assumes that either the Ethernet MAC (if capable or the PCB traces) insert the correct 1. We’ll explore ethtool’s core functionality, delve into its advanced features, and even discuss common issues and their solutions. 5s的时间内完成，复位过程中Bit15保持为1，复位完成之后该位应该自动清零。 int phy_ethtool_get_eee (struct phy_device * phydev, struct ethtool_eee * data); int phy_ethtool_set_wol (struct phy_device * phydev, struct ethtool_wolinfo * wol); void phy_ethtool_get_wol (struct phy_device * phydev, struct ethtool_wolinfo * wol); int phy_ethtool_get_link_ksettings (struct net_device * ndev, struct ethtool_link_ksettings * cmd); Oct 30, 2023 · I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. How do I do that with the command line? Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full. ethtool is used to query and control network device driver and hardware settings, particularly for wired Ethernet devices. With driver e1000e will fail while reading register 0x07. They select the page, read or write the register, and restore the original page, all mii_id is the address on the bus for the PHY, and regnum is the register number. devname is the name of the network device on which ethtool should operate. 2k次。Linux+arm 网卡故障调试：ethtool&phy寄存器读写两个工具一个是ethtool工具，一个是源码编译的可以读phy寄存器的工具phyreg。 Oct 12, 2017 · 文章浏览阅读5. 3ah draft for Clause 22) for accessing the extended register set. Note that the PHY index can be passed to other requests, which will silently ignore it if present and irrelevant. 在调试网口驱动的过程中发现 phy 芯片的驱动框架结构还有点复杂，不仔细研究的话还不好搞懂，另外百度到的资料也不够全面，这篇就总结梳理一下这方面的知识。 In function phy_mii_ioctl i put the calls to phy_read and phy_write inside mutex locks and commented any particular switch that could be made based on the register being written via ioctl (in fact my phy does have paged register and register 1 is the status register only if the selected page is 0) and I was not going to alter control registers Dec 23, 2023 · Model-Based Design Toolbox (MBDT)Model-Based Design Toolbox (MBDT) Sep 3, 2019 · Purpose. Oct 30, 2023 · I want to read/modify the Phy registers at Linux, please note that iam able to read/modify the phy at u-boot using : mii read and mii write commands, but iam unable to read/modify when the linux boots. 使用以下命令来读取PHY寄存器： ``` sudo ethtool -r <interface> [dev_addr] [offset] ``` 在上述命令中，`<interface>`是您要读取的网络接口的名称，`[dev_addr]`是可选的PHY设备地址，`[offset]`是要读取的寄存器偏移量。 When raw is enabled, then ethtool dumps the raw register data to stdout. 0101 <PHY Addr> <PHY Register>10 0000 0000 0001 1111 I want to read out the PHY registers for inspection, and found ethtool --register-dump eth0. 0. stdin is read and written to the EEPROM. Apr 30, 2023 · 1. If file is specified, then use contents of previous raw register dump, rather than reading from the device. If we read the phy registers at the Uboot using "mii dump <phyid> <regid> command, the phy register Jun 27, 2022 · 1 MAC和PHY体系结构在嵌入式网络设备中，MAC和PHY是两个层级的底层的网络设备。MAC对应了MAC controller或者叫做Ethernet controller，软件驱动为以太驱动。 Sep 19, 2019 · One of our link partners isn't completely compliant to 10GBaseKR so we're interested in disabling some features of the PHY (e. Alert: If used three times, will force reading all MII registers, including non standard ones. The register format for some devices is known and decoded others are printed in hex. To use the tool, type the following: phytool read {Interface}/{PHY ID}/{register address} Dec 9, 2020 · In this simple demo, we will see how to manually read the PHY registers over MDIO. You switched accounts on another tab or window. PHY芯片为OSI的最底层-物理层(Physical Layer)，通过MII与数据链路层的MAC芯片相连，对于MAC与PHY之间的一些知识可以查看Mac与Phy组成原理的简单分析，这篇文章进行熟悉。 Feb 10, 2021 · + /* Read the QCA807x PHY-Specific Status register copper page, + * which indicates the speed and duplex that the PHY is actually + * using, irrespective of whether we are in autoneg mode or not. The length and offset ethtool ETHTOOL(8) System Manager's Manual ETHTOOL(8) NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool -h|--help Nov 5, 2023 · 上图来自 瑞昱半导体 (realtek) 的 rtl8201f 系列网卡 phy 芯片手册。按osi 7层网络模型划分，网卡phy 芯片(图中的rtl8201f)位于物理层，对应的软件层就是本文讨论的 phy 驱动层；而 mac 位于 数据链路层，也是通常软件上所说的网卡驱动层，它不是本文的重点，不做展开。 This post shows the list of ethtool counters applicable for ConnectX-4 and above (mlx5 driver). Thank you! Sep 9, 2021 · GitHub: MDIO. Do not use. 100baseT/Half 100baseT/Full. PHY关注于与网络连接另一端的链路伙伴（通常是以太网电缆）协商链路参数，并提供注册接口以允许驱动程序确定选择了哪些设置，并配置允许的设置. OK I reviewed the code. using: ethtool-S ethX (that shows the Management counters (MMC) if supported) or sees the MAC/DMA registers: e. 6以上通用。 Dec 4, 2024 · 它主要用于与网络接口卡上的物理层（PHY）进行交互，用于调整和监控网络连接的一些参数。 phytool可以用来查询和显示PHY的状态信息，例如速度、双工模式、连接状态等。通过使用phytool，可以查看和设置各种PHY的 Jan 3, 2023 · There are many utilities that can be run from the terminal prompt of the Linux PHY host, among them are: ethtool – Popular and widely available, but with some problems. Best regards igor-----Note: If this post answers your question, please click the Correct Answer button. May 6, 2020 · Reset：Bit15控制的是PHY复位功能，在该位置写入1实现对PHY的复位操作。复位后该端口PHY的其他控制、状态寄存器将恢复到默认值，每次PHY复位应该在0. 简介. Nov 28, 2019 · 查看MAC和PHY配置和状态工具有 mii-tool/ethtool. However, the flow below shows how this can be done simply via devmem incase such utilities are unavailable. PCS autoneg will be disabled and PCS_status register will always report link up (to be read twice because of sticky bits). We have verified the patch on AM335x platform which has one YT8531 interface card and passed all test cases. PHY Abstraction Layer¶ Purpose¶. These functions are guaranteed not to be called from interrupt time, so it is safe for them to block, waiting for an interrupt to signal the operation is complete Jan 17, 2018 · 文章浏览阅读2. Hello. Then you can write a phy module. Mar 12, 2014 · How can i use ETHTOOL IOCTLs to do the same thing as I used with mii-tool ioctls, that is read phy's MII registers? Or I can't do it at all? I am familiar with the mii-tool IOCTL calls which could be used to access a PHY device's MII registers something like this: static int mdio_read (int skfd, int location) { struct mii_data *mii = ( I want to check if a specified ethX is physically up or down. 9k次，点赞2次，收藏22次。关键在于 mt7530_switch_ops 和 dsa_register_switch。要点：是用 mdio_module_driver。定义了一些关键函数。 Nov 2, 2023 · 送你一些提高迟滞的简单方法，可实现平稳的欠压和过压闭锁 工程师实战分享：分光测色仪硬件设计方案 读书日丨好书配勇者，勇者斗恶龙~ Part Number: PROCESSOR-SDK-AM437X Board used : idkAM437x. This is a handy tool to read and write registers of a PHY attached to a network device. vkevci uub eeb zeviejc xkxl qfsav emfldx wawmbu sjv mbnp