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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

Block Driver Structure Overview

File I/O

Block Device Autoconfiguration

Controlling Device Access

open() Entry Point (Block Drivers)

close() Entry Point (Block Drivers)

strategy() Entry Point

buf Structure

bp_mapin Structure

Synchronous Data Transfers (Block Drivers)

Asynchronous Data Transfers (Block Drivers)

Checking for Invalid buf Requests

Enqueuing the Request

Starting the First Transfer

Handling the Interrupting Device

dump() and print() Entry Points

dump() Entry Point (Block Drivers)

print() Entry Point (Block Drivers)

Disk Device Drivers

Disk ioctls

Disk Performance

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


Block Driver Structure Overview

Figure 16-1 shows data structures and routines that define the structure of a block device driver. Device drivers typically include the following elements:

The shaded device access section in the following figure illustrates entry points for block drivers.

Figure 16-1 Block Driver Roadmap

Diagram shows structures and entry points for block device drivers.

Associated with each device driver is a dev_ops(9S) structure, which in turn refers to a cb_ops(9S) structure. See Chapter 6, Driver Autoconfiguration for details on driver data structures.

Block device drivers provide these entry points:

Note - Some of the entry points can be replaced by nodev(9F) or nulldev(9F) as appropriate.