Linux设备驱动程序 第3版PDF电子书下载

1.An Introduction to Device Drivers 1

The Role of the Device Driver 2

Splitting the Kernel 4

Classes of Devices and Modules 5

Security Issues 8

Version Numbering 10

License Terms 11

Joining the Kernel Development Community 12

Overview of the Book 12

2.Building and Running Modules 15

Setting Up Your Test System 15

The Hello World Module 16

Kernel Modules Versus Applications 18

Compiling and Loading 22

The Kernel Symbol Table 28

Preliminaries 30

Initialization and Shutdown 31

Module Parameters 35

Doing It in User Space 37

Quick Reference 39

3.Char Drivers 42

The Design of scull 42

Major and Minor Numbers 43

Some Important Data Structures 49

Char Device Registration 55

open and release 58

scull’s Memory Usage 60

read and write 63

Playing with the New Devices 70

Quick Reference 70

4.Debugging Techniques 73

Debugging Support in the Kernel 73

Debugging by Printing 75

Debugging by Querying 82

Debugging by Watching 91

Debugging System Faults 93

Debuggers and Related Tools 99

5.Concurrency and Race Conditions 106

Pitfalls in scull 107

Concurrency and Its Management 107

Semaphores and Mutexes 109

Completions 114

Spinlocks 116

Locking Traps 121

Alternatives to Locking 123

Quick Reference 130

6.Advanced Char Driver Operations 135

ioctl 135

Blocking I/O 147

poll and select 163

Asynchronous Notification 169

Seeking a Device 171

Access Control on a Device File 173

Quick Reference 179

7.Time，Delays，and Deferred Work 183

Measuring Time Lapses 183

Knowing the Current Time 188

Delaying Execution 190

Kernel Timers 196

Tasklets 202

Workqueues 205

Quick Reference 208

8.Allocating Memory 213

The Real Story of kmalloc 213

Lookaside Caches 217

get_free_page and Friends 221

vmalloc and Friends 224

Per-CPU Variables 228

Obtaining Large Buffers 230

Quick Reference 231

9.Communicating with Hardware 235

I/O Ports and I/O Memory 235

Using I/O Ports 239

An I/O Port Example 245

Using I/O Memory 248

Quick Reference 255

10.Interrupt Handling 258

Preparing the Parallel Port 259

Installing an Interrupt Handler 259

Implementing a Handler 269

Top and Bottom Halves 275

Interrupt Sharing 278

Interrupt-Driven I/O 281

Quick Reference 286

11.Data Types in the Kernel 288

Use of Standard C Types 288

Assigning an Explicit Size to Data Items 290

Interface-Specific Types 291

Other Portability Issues 292

Linked Lists 295

Quick Reference 299

12.PCIDrivers 302

The PCI Interface 302

A Look Back：ISA 319

PC/104 and PC/104+ 322

Other PC Buses 322

SBus 323

NuBus 324

External Buses 325

Quick Reference 325

13.USB Drivers 327

USB Device Basics 328

USB and Sysfs 333

USB Urbs 335

Writing a USB Driver 346

USB Transfers Without Urbs 356

Quick Reference 360

14.The Linux Device Model 362

Kobjects，Ksets，and Subsystems 364

Low-Level Sysfs Operations 371

Hotplug Event Generation 375

Buses，Devices，and Drivers 377

Classes 387

Putting It All Together 391

Hotplug 397

Dealing with Firmware 405

Quick Reference 407

15.Memory Mapping and DMA 412

Memory Management in Linux 412

The mmap Device Operation 422

Performing Direct I/O 435

Direct Memory Access 440

Quick Reference 459

16.Block Drivers 464

Registration 465

The Block Device Operations 471

Request Processing 474

Some Other Details 491

Quick Reference 494

17.Network Drivers 497

How snull Is Designed 498

Connecting to the Kernel 502

The net_device Structure in Detail 506

Opening and Closing 515

Packet Transmission 516

Packet Reception 521

The Interrupt Handler 523

Receive Interrupt Mitigation 525

Changes in Link State 528

The Socket Buffers 528

MAC Address Resolution 532

Custom ioctl Commands 535

Statistical Information 536

Multicast 537

A Few Other Details 540

Quick Reference 542

18.TTY Drivers 546

A Small TTY Driver 548

tty_driver Function Pointers 553

TTY Line Settings 560

ioctls 564

proc and sysfs Handling of TTY Devices 566

The tty_driver Structure in Detail 567

The tty_operations Structure in Detail 569

The tty_struct Structure in Detail 571

Quick Reference 573

Bibliography 575

Index 579