Preface
	Jon's Introduction
	Alessandro's Introduction
	Greg's Introduction
	Audience for This Book
	Organization of the Material
	Background Information
	Online Version and License
	Conventions Used in This Book
	Using Code Examples
	We'd Like to Hear from You
	Safari Enabled
	Acknowledgments
1. An Introduction to Device Drivers
	1.1. The Role of the Device Driver
	1.2. Splitting the Kernel
	1.3. Classes of Devices and Modules
	1.4. Security Issues
	1.5. Version Numbering
	1.6. License Terms
	1.7. Joining the Kernel Development Community
	1.8. Overview of the Book
2. Building and Running Modules
	2.1. Setting Up Your Test System
	2.2. The Hello World Module
	2.3. Kernel Modules Versus Applications
	2.4. Compiling and Loading
	2.5. The Kernel Symbol Table
	2.6. Preliminaries
	2.7. Initialization and Shutdown
	2.8. Module Parameters
	2.9. Doing It in User Space
	2.10. Quick Reference
3. Char Drivers
	3.1. The Design of scull
	3.2. Major and Minor Numbers
	3.3. Some Important Data Structures
	3.4. Char Device Registration
	3.5. open and release
	3.6. scull's Memory Usage
	3.7. read and write
	3.8. Playing with the New Devices
	3.9. Quick Reference
4. Debugging Techniques
	4.1. Debugging Support in the Kernel
	4.2. Debugging by Printing
	4.3. Debugging by Querying
	4.4. Debugging by Watching
	4.5. Debugging System Faults
	4.6. Debuggers and Related Tools
5. Concurrency and Race Conditions
	5.1. Pitfalls in scull
	5.2. Concurrency and Its Management
	5.3. Semaphores and Mutexes
	5.4. Completions
	5.5. Spinlocks
	5.6. Locking Traps
	5.7. Alternatives to Locking
	5.8. Quick Reference
6. Advanced Char Driver Operations
	6.1. ioctl
	6.2. Blocking I/O
	6.3. poll and select
	6.4. Asynchronous Notification
	6.5. Seeking a Device
	6.6. Access Control on a Device File
	6.7. Quick Reference
7. Time, Delays, and Deferred Work
	7.1. Measuring Time Lapses
	7.2. Knowing the Current Time
	7.3. Delaying Execution
	7.4. Kernel Timers
	7.5. Tasklets
	7.6. Workqueues
	7.7. Quick Reference
8. Allocating Memory
	8.1. The Real Story of kmalloc
	8.2. Lookaside Caches
	8.3. get_free_page and Friends
	8.4. vmalloc and Friends
	8.5. Per-CPU Variables
	8.6. Obtaining Large Buffers
	8.7. Quick Reference
9. Communicating with Hardware
	9.1. I/O Ports and I/O Memory
	9.2. Using I/O Ports
	9.3. An I/O Port Example
	9.4. Using I/O Memory
	9.5. Quick Reference
10. Interrupt Handling
	10.1. Preparing the Parallel Port
	10.2. Installing an Interrupt Handler
	10.3. Implementing a Handler
	10.4. Top and Bottom Halves
	10.5. Interrupt Sharing
	10.6. Interrupt-Driven I/O
	10.7. Quick Reference
11. Data Types in the Kernel
	11.1. Use of Standard C Types
	11.2. Assigning an Explicit Size to Data Items
	11.3. Interface-Specific Types
	11.4. Other Portability Issues
	11.5. Linked Lists
	11.6. Quick Reference
12. PCI Drivers
	12.1. The PCI Interface
	12.2. A Look Back: ISA
	12.3. PC/104 and PC/104+
	12.4. Other PC Buses
	12.5. SBus
	12.6. NuBus
	12.7. External Buses
	12.8. Quick Reference
13. USB Drivers
	13.1. USB Device Basics
	13.2. USB and Sysfs
	13.3. USB Urbs
	13.4. Writing a USB Driver
	13.5. USB Transfers Without Urbs
	13.6. Quick Reference
14. The Linux Device Model
	14.1. Kobjects, Ksets, and Subsystems
	14.2. Low-Level Sysfs Operations
	14.3. Hotplug Event Generation
	14.4. Buses, Devices, and Drivers
	14.5. Classes
	14.6. Putting It All Together
	14.7. Hotplug
	14.8. Dealing with Firmware
	14.9. Quick Reference
15. Memory Mapping and DMA
	15.1. Memory Management in Linux
	15.2. The mmap Device Operation
	15.3. Performing Direct I/O
	15.4. Direct Memory Access
	15.5. Quick Reference
16. Block Drivers
	16.1. Registration
	16.2. The Block Device Operations
	16.3. Request Processing
	16.4. Some Other Details
	16.5. Quick Reference
17. Network Drivers
	17.1. How snull Is Designed
	17.2. Connecting to the Kernel
	17.3. The net_device Structure in Detail
	17.4. Opening and Closing
	17.5. Packet Transmission
	17.6. Packet Reception
	17.7. The Interrupt Handler
	17.8. Receive Interrupt Mitigation
	17.9. Changes in Link State
	17.10. The Socket Buffers
	17.11. MAC Address Resolution
	17.12. Custom ioctl Commands
	17.13. Statistical Information
	17.14. Multicast
	17.15. A Few Other Details
	17.16. Quick Reference
18. TTY Drivers
	18.1. A Small TTY Driver
	18.2. tty_driver Function Pointers
	18.3. TTY Line Settings
	18.4. ioctls
	18.5. proc and sysfs Handling of TTY Devices
	18.6. The tty_driver Structure in Detail
	18.7. The tty_operations Structure in Detail
	18.8. The tty_struct Structure in Detail
	18.9. Quick Reference
19. Bibliography
	19.1. Books
	19.2. Web Sites
Index

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