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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

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 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


Memory Mapping Overview

The steps that a driver must take to export device or kernel memory are as follows:

  1. Set the D_DEVMAP flag in the cb_flag flag of the cb_ops(9S) structure.

  2. Define a devmap(9E) driver entry point and optional segmap(9E) entry point to export the mapping.

  3. Use devmap_devmem_setup(9F) to set up user mappings to a device. To set up user mappings to kernel memory, use devmap_umem_setup(9F).