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DEC402 : Linux Device Driver Development Training

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    Course Code  :   DEC402

    Duration         :   40 Hrs

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Overview

DEC402: Linux Device Driver (LDD) course will teach you the different types of Linux device drivers as well as the appropriate APIs and methods through which devices interface with the kernel.


Target Audience

Experienced C programmers with a good understanding of the Linux kernel who want to learn how to develop device drivers for Linux systems.


Objectives

  • Module Programming
  • Device Driver
  • Character Device Driver
  • Intrrupt Handling
  • Advanced File Operation
  • Interacting with Devices
  • Direct Memory Access
  • PCI Drivers
  • USB Drivers
  • Network Device Drivers
  • Introduction to Block Device Drivers
  • Debugging Techniques
  • Other Issues

Prerequisite

  • Experience in C programming
  • Linux System Administration or equivalent UNIX or Linux workstation user skills for development
  • Shell scripting in a UNIX or Linux environment
  • Experience with text editors (vi, emacs)

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LDD-Syllabus

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1. Module Programming
  • Kernel Coding
  • Module Programming
  • Module Dependency
  • Module Parameter Passing
2. Character Device Driver
  • Device Drivers
  • Device Driver Design
  • Interacting with Character Device Drivers
  • Interacting with Block Device Drivers
  • Interacting with Network Interface Cards
  • Device Nodes
  • Character Device Drivers: Registration
  • The Device Node Problem
  • File Operations
  • Defining File Operations
  • Registering File Operations
  • File I/O Conventions
  • open
  • close
  • read
  • write
  • lseek
3. Kernel Synchronization methods
  • Source of concurrency
  • Kernel Synchronization techquiques
  • atomic operations
  • semapores
  • mutex
  • spin locks
  • reach copy update
  • memory barriers
  • etc
4. Advanced File Operation
  • IOCTLs
  • IOCTL Conventions
  • Implementing IOCTLs
  • Lockless IOCTLs
  • Sleeping
  • Wait Queues
  • Wait Queues
  • Variations on wait_event()
  • Sleeping in System Calls
  • Multiplexed I/O
  • Polling
5. Interrupt Handling
  • Interrupt Context
  • Handling Interrupts
  • Interrupt Structures
  • ISR Registration
  • System Context
  • Softirqs
  • Deferred Activity: Tasklets
  • Deferred Activity: Work Queues
  • Custom Work Queues
  • Example: Keyboard, Mouse
6. Interacting With Devices
  • Device Interaction
  • Managing Exclusive Access
  • I/O Ports
  • I/O Memory Buffers
  • Accessing I/O Memory Buffers
  • Userspace Drivers
7. Memory Management in Kernel
  • Memory Initialization
  • Memory Management
  • page allocators
  • slab allocator
  • buddy allocator
  • fragment and cache
  • bootmem allocator
  • kmalloc and kfree
  • vmalloc
8. Direct Memory Access
  • Managing DMA
  • Initializing DMA
  • Coherent Allocations
  • Streaming DMA Mappings
9. Introduction to Block Device Drivers
  • Block Devices
  • I/O Scheduling
  • Linux 2.6 Elevator Functions
  • Block Device Driver Implementation
  • Block Device Registration
  • Block Device File Operations
  • The gendisk structure
  • Request Queues
  • Initialization Example
  • Handling Requests
10. PCI Drivers
  • Peripheral Component Interconnect
  • PCI Configuration Space
  • PCI Driver Registration
  • Registering PCI Drivers
  • Driver Probe Function
  • Initializing PCI devices
  • Releasing a PCI Device
  • Managing PCI Resources
  • Accessing Configuration Space
  • Listing PCI Devices
11. Network Device Drivers
  • Networking
  • Network Devices
  • Network Device Callback Functions
  • Network Driver Initialization
  • Network Driver Transmission Queue
  • Control
  • Network Statistics
  • Socket Buffers (Packets)
  • Socket Buffer API
  • Transmission
  • Reception
  • Example Implementations
12. Sysfs, procfs and Debugfs, probing , notifications
  • sysfs intro
  • sysfs entry
  • procfs intro
  • procfs entry
  • debugfs intro
  • debugfs entry
  • probing techniques
  • notifications techniques
13. USB Drivers **
  • The Universal Serial Bus
  • USB Descriptors
  • USB Transfer Types
  • Linux USB Implementation
  • USB Drivers
  • USB Registration
  • Initializing USB Interfaces
  • USB Class Drivers
  • USB Request Blocks
  • Using USB request blocks
  • Synchronous USB Requests
  • More information


** If time permits or Extras

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Note:

** These sections may be considered in part or in whole as optional. They contain background reference material, specialized topics, or advanced subjects. The instructor may choose to cover or not cover them depending on classroom experience and time constraints.


Linux Device Driver Introduction

This course will teach you how to develop device drivers for Linux systems, grounded with a basic familiarity and understanding of the underlying Linux kernel. There are thousands of device drivers in Linux kernel and are normally characterized as Character drivers, Block drivers, Network drivers and Bus drivers. Furthermore, these bus device drivers can be of various types depending on the buses like USB drivers, PCI drivers, SBus drivers, HDMI drivers, I2C drivers, Uart drivers and a lot more.

‚ÄčThis intensive training course transforms an IT-Professional or a Student into a Linux Device Driver & Kernel Developer. The participant will develop a deep understanding of Linux device driver subsystem, how it interfaces with Linux kernel as well as various devices; Participant will also learn other kernel subsystems and skills necessary to do efficient programming in kernel mode in Linux.

Writing Linux Device Drivers is designed to show experienced programmers how to develop device drivers for Linux systems, and give them a basic understanding and familiarity with the Linux kernel.

  • You are interested in learning how to write device drivers for the Linux operating system. Maybe you likely to have this task as part of your job or for hobby development. The purpose of learning linux device driver course here is to ease your path and perhaps shorten the amount of time it takes to reach a level of basic competence in this development.

  • You are interested in learning how to write device drivers for the Linux operating system. Maybe you likely you have this task as part of your job or for hobby development. The purpose here is to ease your path and perhaps shorten the amount of time it takes to reach a level of basic competence in this development.

  • You will be familiar with the different kinds of device drivers used under Linux, and know the appropriate API's through which devices (both hard and soft) interface with the kernel.

  • Our order of presentation is not axiomatic; The purpose is to get you into coding as quickly as possible. Thus we'll tell you early on how to dynamically allocate memory in the simplest way, so you can actually write code, and then later cover the subject more thoroughly. Furthermore, the order of subjects is flexible, so feel free to vary it according to your interests.

  • Each section has exercises, most of which involve writing code, designed to help you gain familiarity with programming for the Linux kernel and Devcie Drivers. Solutions are provided.

  • We are aiming for a beginner to intermediate audience, expert will also be considered if they are lack in some portion of our topics, but instead for a competent and motivated one.

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