1. 主机控制器(Host Controller) • UHCI: Universal Host Controller Interface (通用主机控制接口, USB1.0/1.1)      • OHCI: Open Host Controller Interface (开放主机控制接口,USB1.0/1.1)      • EHCI: Enhanced Host Controller Interface (用于USB2.0高速设备的“增强主机控制接口”) USB的拓扑结构决定了主机控制器就…

USB主机控制器ECHI 2017年10月24日 15:44:11 阅读数:239 1. 主机控制器(Host Controller) • UHCI: Universal Host Controller Interface (通用主机控制接口, USB1.0/1.1)      • OHCI: Open Host Controller Interface (开放主机控制接口,USB1.0/1.1)      • EHCI: Enhanced Host Controller Interface (…

Protecting computer systems from attacks that attempt to change USB topology and for ensuring that the system's information regarding USB topology is accurate is disclosed. A software model is defined that, together with secure USB hardware, provides…

转自:http://blog.chinaunix.net/uid-20543183-id-1930831.html   ------------------------------------------ 本文系本站原创,欢迎转载! 转载请注明出处:http://ericxiao.cublog.cn/ ------------------------------------------ 一:前言 Usb是一个很复杂的系统.在usb2.0规范中,将其定义成了一个分层模型.linux中的代码也是按照…

USB 的全称是 Universal Serial Bus,顾名思义:通用串行总线. 提到总线,联想一下,在你心目中总线总是用来干嘛的?还记得 I2C 总线? I2C 总线上挂有二条信号线,一条是 SCL. SDA,这二货是干嘛滴?传输数据!对,就是用来传输数据的.换句话说,就是用来通信的. 既然是用来通信的,那自然就要用通信协议来规范通信. 在 USB 的世界里有一种协议叫 USB 协议, 这协议太复杂了,一时半载的难以消化,这里我们并不深入 USB 协议. 10.1 USB 总线简介 USB…

文章目录 1. 简介 2. Usb Core 驱动设备模型 2.1 Usb Device Layer 2.1.1 device (struct usb_device) 2.1.2 driver (struct usb_device_driver) 2.1.3 bus (usb_bus_type) 2.2 Usb Interface Layer 2.2.1 device (struct usb_interface) 2.2.2 driver (struct usb_driver) 2.2.3 bu…

在Vmware里安装完Ubuntu16.10,启动时出现'SMBus Host Controller not enabled'错误提示,进不到图形界面.网上搜了一下,解决办法是在图形界面里进终端窗口,编辑blacklist.conf文件,禁止i2c_piix4驱动的加载.但现在系统还没加载完,进不去终端窗口,如何处理呢? 解决办法如下(亲测可用): 在虚拟机上运行Linux内核版本为4.7或以上的系统都在安装过程中或在启动时会因为加载intel_powerclamp驱动而导致崩溃.解决办法:1.…

The Host Controller (HC) contains a set of on-chip operational registers which are mapped into a noncacheable portion of the system addressable space. These registers are used by the Host Controller Driver (HCD). According to the function of these re…

问题描述:Ubuntu开机时提示“piix4_smbus 0000:00:07.3: SMBus Host controller not enabled” 版本:Ubuntu 18.04    VMware 14.0 出现原因:系统装入i2c_piix4模块所致,因为系统找不到这个模块,所以报错 解决办法:1,查明装入模块的确切名字.命令:lsmod | grep i2c (查询结果为:i2c_piix4 模块) 2,将该模块列入不装入名单.编辑文件命令:sudo vi  /etc/modpro…

The logical Host Controller Interface does not consider multiplexing/routing over the Host Controller Transport Layer(s). The Host designer must consider this in deciding which of the multiple controller configurations it will support. Each logical A…