Skip to main content.

Navigation: DENX > Training2 > LddDefDeviceDriver

Translations: Edit | Attach | Raw | Ref-By | Printable | More

Denx.de

Training2

Sections of this site: DENX Home | DULG | ELDK-5 | Know | Training | U-Boot | U-Bootdoc

Topics

Training2 Home Changes Index Search Go

List of pages in Training2 Search

%SECTION0{name=LddDevDeviceDriver}% What is a Device Driver?

*Definition:*

   * _A Device Driver is a core software component of an operating system that abstracts a device and provides a well defined interface for generic core code_

*Characteristics:*

   * _mechanism, not policy_

   * type

   * "contact" with userspace or not

*Kernel components a driver interacts with:*

   * File system (device files, file operations ...)
      * =open()=, =read()=

   * Scheduler
      * =schedule()=

   * Memory management
      * =kmalloc()=, ...

   * Process management 
      * bad example: =current->state = TASK_INTERRUPTIBLE=

5.1.2. The Linux versioning scheme		1. Denx Training Topics		5.1.4. Kernel vs. Application Development
Prev		Home		Next

Revision r1.2 - 31 Jan 2008 - 15:10 - MarkusKlotzbuecher
Diffs | r1.2 | > | r1.1

Copyright © 2002-2013 by DENX Software Engineering