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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

Introduction to Device Context

What Is a Device Context?

Context Management Model

Context Management Operation

devmap_callback_ctl Structure

Entry Points for Device Context Management

devmap_map() Entry Point

devmap_access() Entry Point

devmap_contextmgt() Entry Point

devmap_dup() Entry Point

devmap_unmap() Entry Point

Associating User Mappings With Driver Notifications

Managing Mapping Accesses

devmap_load() Entry Point

devmap_unload() Entry Point

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

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 11

Device Context Management

Some device drivers, such as drivers for graphics hardware, provide user processes with direct access to the device. These devices often require that only one process at a time accesses the device.

This chapter describes the set of interfaces that enable device drivers to manage access to such devices. The chapter provides information on the following subjects: