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Writing Device Drivers     Oracle Solaris 10 1/13 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

11.  Device Context Management

12.  Power Management

Power Management Framework

Device Power Management

System Power Management

Device Power Management Model

Power Management Components

Multiple Power Management Components

Power Management States

Power Levels

Power Management Dependencies

Automatic Power Management for Devices

Device Power Management Interfaces

Busy-Idle State Transitions

Device Power State Transitions

power() Entry Point

System Power Management Model

Autoshutdown Threshold

Busy State

Hardware State

Automatic Power Management for Systems

Entry Points Used by System Power Management

detach() Entry Point

attach() Entry Point

Power Management Device Access Example

Power Management Flow of Control

Changes to Power Management Interfaces

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 Solaris DDI/DKI Services

C.  Making a Device Driver 64-Bit Ready

D.  Console Frame Buffer Drivers

E.  pci.conf File


Power Management Framework

The Oracle Solaris Power Management framework depends on device drivers to implement device-specific power management functions. The framework is implemented in two parts:

Device Power Management

The framework enables devices to reduce their energy consumption after a specified idle time interval. As part of power management, system software checks for idle devices. The Power Management framework exports interfaces that enable communication between the system software and the device driver.

The Oracle Solaris Power Management framework provides the following features for device power management:

System Power Management

System power management involves saving the state of the system prior to powering the system down. Thus, the system can be returned to the same state immediately when the system is turned back on.

To shut down an entire system with return to the state prior to the shutdown, take the following steps:

SPARC only - System power management is currently implemented only on some SPARC systems supported by the Oracle Solaris OS. See the power.conf(4) man page for more information.

The System Power Management framework in the Oracle Solaris OS provides the following features for system power management: