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Writing Device Drivers
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Part I Designing Device Drivers for the Solaris Platform

1.  Overview of Solaris Device Drivers

2.  Solaris Kernel and Device Tree

3.  Multithreading

4.  Properties

5.  Managing Events and Queueing Tasks

6.  Driver Autoconfiguration

7.  Device Access: Programmed I/O

8.  Interrupt Handlers

9.  Direct Memory Access (DMA)

10.  Mapping Device and Kernel Memory

11.  Device Context Management

12.  Power Management

13.  Hardening Solaris Drivers

14.  Layered Driver Interface (LDI)

Part II Designing Specific Kinds of Device Drivers

15.  Drivers for Character Devices

16.  Drivers for Block Devices

17.  SCSI Target Drivers

18.  SCSI Host Bus Adapter Drivers

19.  Drivers for Network Devices

20.  USB Drivers

Part III Building a Device Driver

21.  Compiling, Loading, Packaging, and Testing Drivers

22.  Debugging, Testing, and Tuning Device Drivers

23.  Recommended Coding Practices

Debugging Preparation Techniques

Use a Unique Prefix to Avoid Kernel Symbol Collisions

Use cmn_err() to Log Driver Activity

Use ASSERT() to Catch Invalid Assumptions

Use mutex_owned() to Validate and Document Locking Requirements

Use Conditional Compilation to Toggle Costly Debugging Features

Declaring a Variable Volatile


Periodic Health Checks

Part IV Appendixes

A.  Hardware Overview

B.  Summary of Solaris DDI/DKI Services

C.  Making a Device Driver 64-Bit Ready

D.  Console Frame Buffer Drivers


Chapter 23

Recommended Coding Practices

This chapter describes how to write drivers that are robust. Drivers that are written in accordance with the guidelines that are discussed in this chapter are easier to debug. The recommended practices also protect the system from hardware and software faults.

This chapter provides information on the following subjects: