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Preface
1£® An Introduction to Device Drivers
The Role of the Device Driver
Splitting the Kernel
Classes of Devices and Modules
Security Issues
Version Numbering
License Terms
Joining the Kernel Development Community
Overview of the Book

2£® Building and Running Modules
Setting Up Your Test System
The Hello World Module
Kernel Modules Versus Applications
Compiling and Loading
The Kernel Symbol Table
Preliminaries
Initialization and Shutdown
Module Parameters
Doing It in User Space
Quick Reference

3£® Char Drivers
The Design of scull
Major and Minor Numbers
Some Important Data Structures
Char Device Registration
open and release
scull's Memory Usage
read and write
Playing with the New Devices
Quick Reference

4£® Debugging Techniques
Debugging Support in the Kernel
Debugging by Printing
Debugging by Querying
Debugging by Watching
Debugging System Faults
Debuggers and Related Tools

5£® Concurrency and Race Conditions
Pitfalls in scull
Concurrency and Its Management
Semaphores and Mutexes
Completions
Spinlocks
Locking Traps
Alternatives to Locking
Quick Reference

6£® Advanced Char Driver Operations
ioctl
Blocking I/O
poll and select
Asynchronous Notification
Seeking a Device
Access Control on a Device File
Quick Reference

7£® Time£¬ Delays£¬ and Deferred Work
Measuring Time Lapses
Knowing the Current Time
Delaying Execution
Kernel Timers
Tasklets
Workqueues
Quick Reference

8£® Allocating Memory
The Real Story of kmalloc
Lookaside Caches
get_flee_page and Friends
vmalloc and Friends
Per-CPU Variables
Obtaining Large Buffers
Quick Reference

9£® Communicating with Hardware
I/O Ports and I/O Memory
Using I/O Ports
An I/O Port Example
Using I/O Memory
Quick Reference

10£® Interrupt Handling
Preparing the Parallel Port
Installing an Interrupt Handler
Implementing a Handler
Top and Bottom Halves
Interrupt Sharing
Interrupt-Driven I/O
Quick Reference

11£® Data Types in the Kernel
Use of Standard C Types
Assigning an Explicit Size to Data Items
Interface-Specific Types
Other Portability Issues
Linked Lists
Quick Reference

12£® PCl Drivers
The PCI Interface
A LookBackl£® ISA
PC/104 and PC/104+
Other PC Buses
SBus
NuBus
External Buses
Quick Reference

13£® USB Drivers
USB Device Basics
USB and Sysfs
USB Urbs
Writing a USB Driver
USB Transfers Without Urbs
Quick Reference

14£® The Linux Device Model
Kobjects£¬ Ksets£¬ and Subsystems
Low-Level Sysfs Operations
Hotplug Event Generation
Buses£¬ Devices£¬ and Drivers
Classes
Putting It All Together
Hotplug
Dealing with Firmware
Quick Reference

15£® Memory Mapping and DMA
Memory Management in Linux
The mmap Device Operation
Performing Direct I/O
Direct Memory Access
Quick Reference

16£® Block Drivers
Registration
The Block Device Operations
Request Processing
Some Other Details
Quick Reference

17£® Network Drivers
How snull Is Designed
Connecting to the Kernel
The net_device Structure in Detail
Opening and Closing
Packet Transmission
Packet Reception
The Interrupt Handler
Receive Interrupt Mitigation
Changes in Link State
The Socket Buffers
MAC Address Resolution
Custom ioctl Commands
Statistical Information
Multicast
A Few Other Details
Quick Reference

18£® TTY Drivers
A Small TTY Driver
tty_driver Function Pointers
TTY Line Settings
ioctls
proc and sysfs Handling of TTY Devices
The tty_driver Structure in Detail
The tty_operations Structure in Detail
The tty_struct Structure in Detail
Quick Reference
Bibliography
Index