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Writing Device Drivers     Oracle Solaris 11.1 Information Library
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Part I Designing Device Drivers for the Oracle Solaris Platform

1.  Overview of Oracle Solaris Device Drivers

2.  Oracle 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

Memory Mapping Overview

Exporting the Mapping

The segmap(9E) Entry Point

The devmap(9E) Entry Point

Associating Device Memory With User Mappings

Associating Kernel Memory With User Mappings

Allocating Kernel Memory for User Access

Exporting Kernel Memory to Applications

Freeing Kernel Memory Exported for User Access

11.  Device Context Management

12.  Power Management

13.  Hardening Oracle 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

21.  SR-IOV Drivers

Part III Building a Device Driver

22.  Compiling, Loading, Packaging, and Testing Drivers

23.  Debugging, Testing, and Tuning Device Drivers

24.  Recommended Coding Practices

Part IV Appendixes

A.  Hardware Overview

B.  Summary of Oracle Solaris DDI/DKI Services

C.  Making a Device Driver 64-Bit Ready

D.  Console Frame Buffer Drivers

E.  pci.conf File


Chapter 10

Mapping Device and Kernel Memory

Some device drivers allow applications to access device or kernel memory through mmap(2). Frame buffer drivers, for example, enable the frame buffer to be mapped into a user thread. Another example would be a pseudo driver that uses a shared kernel memory pool to communicate with an application. This chapter provides information on the following subjects: