riverbed device

Terms: Physical device physical device is the actual hard drive connected to the system A port port is a physical connector/adapter card connected to a physical device on the system, and many ports are programmed by the system software to enable different types of devices to be added. Device drivers are software tha

This paper introduces the device mapper mapping mechanism in Linux kernel with specific code. Device Mapper is a mapping framework mechanism from logical devices to physical devices provided in the Linux 2.6 kernel, in which the user can easily develop a management strategy to implement storage resources according to their own needs, and the current more popular Linux logical Volume Manager LVM2 (Linux Volu

Turn from: http://blog.chinaunix.net/uid-23795818-id-2385141.htmlWhat the host will do: Hardware and softwareThe hardware required for the host side is: USB host controller and a root hub with one or more USB ports.The SOFTWARE is: an operating system, enables device drivers to communicate with Lower-level, that access the USB drivers.A host controller is always combined with a root hub (but it is still not possible to combine the two into a single

ASP.net in the previous article I used to introduce devicespecific/choice constructs and device filters, when we were still in asp.net Define device filters and Devicespecific/choice constructs by manually encoding in the HTML view of the mobile page or in the Web.config file of the site program. However, if you are using Visual Studio 2005, we can directly use a convenient, visual way to define Devicespeci

This idea has been in the head before, recently the company's products to use, so more to do some understanding.1. Introduction to USBUSB is Universal Serial bus abbreviation, literally, is the meaning of universal serial bus. Physically, it is a pair of differential lines, connected to two devices, data transmission between each other. With the other two power supplies (5V and GND), there are altogether 4 lines.So, since there is only a pair of differential lines, then how to decide who to pass

This paper introduces the device mapper mapping mechanism in Linux kernel with specific code. Device Mapper is a mapping framework mechanism from logical devices to physical devices provided in the Linux 2.6 kernel, in which the user can easily develop a management strategy to implement storage resources according to their own needs, and the current more popular Linux logical Volume Manager LVM2 (Linux Volu

1. Misc_open function AnalysisIn DRIVER/CHAR/MISC.C, the MISC.C is implemented by the driver framework, which is an interface for the Misc driver framework to open a misc device for the application layer.1, first we need to know in misc.c in the Misc_init function, misc This kind of device is registered as a character device driver. The code is as followsstatic i

Some time ago when learning the Linux device driver, I looked at the Chen Cossong "deep Linux device driver kernel mechanism" book.Tell the truth. This is a very good book, the author not only gives the device driver development process required knowledge points (such as corresponding functions and data structures), but also into the Linux kernel to analyze the p

Some time ago when learning the Linux device driver, I looked at the Chen Cossong "deep Linux device driver kernel mechanism" book. To tell the truth, this is a very good book, the author not only give the device driver development process of the required knowledge points (such as the corresponding functions and data structures), but also into the Linux kernel to

I. Suspend and resume of equipment IRQThis section addresses the question of how to suspend a device interrupt (IRQ) during system hibernation. How do I resume a device IRQ during a wake-up from hibernation?In general, the IRQ (interrupt request line) of each device is disable at the end of the system suspend process. The specific point in time is after the late

The device is not identified by its file name, butID of the Primary and Secondary device numbers of the file(The file name and the file's primary and secondary device numbers are displayed in the inode data area of the parent directory of the device file, which is the stuff at the FS Layer ). Differences between a

After connecting the device under Ubuntu12.04, it is shown:device not found, the workaround is as follows:Try it first:ADB kill-serverADB start-serverADB shellIf you can't, follow the steps below.1) First enter the user directoryCD ~Ls-alYou can see a/.android directory.CD. AndroidThere should be a Adb_usb.ini file that is not created.Touch Adb_usb.ini2) Use LSUSB to see the vid of the connected device.Connect the

Linux device management is closely integrated with the file system. Various devices are stored in the/dev directory as files, which are called device files. ApplicationProgramYou can open, close, and read/write these device files to complete operations on the device, just like operating a common data file. To manage th

In the previous article, I once introduced devicespecific/choice construction and device filter. At that time, we were still in ASP.. NET mobile page. the Config File uses manual encoding to define the device filter and devicespecific/choice construction. However, if you are using Visual Studio 2005, we can use a convenient and visualized method to define devicespecific/choice structures and

Drive develops reading notes. 0.04 Linux 2.6 Platform device register platform equipment registration 1/2 Total 2 articlesDocumentation/driver-model/platform.txtDevice Enumeration the~~~~~~~~~~~~~~~~~~as a rule, platform specific (and often board-specific) Setup code'll, register platform devices: - the intPlatform_device_register (structPlatform_device *Pdev); the the intPlatform_add_devices (structPlatform_device **pdevs,intNdev);

Device Tree Manual (Device treehouse Usage) Original address: Http://www.devicetree.org/Device_Tree_Usage A more complete technical description of the Device data format, the reader can refer to the EPAPR specification ( Http://www.power.org/resources/downloads/Power_ePAPR_APPROVED_v1.0.pdf) Overview:ARM Device tree

OverviewThere are 2 types of devices in Linux: Character devices (no buffering and only sequential access), block devices (with buffering and random access). Each character device and block device must have a primary, secondary device number, and the same device as the primary devi