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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

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

Introduction to Host Bus Adapter Drivers

SCSI Interface

SCSA HBA Interfaces

SCSA HBA Entry Point Summary

SCSA HBA Data Structures

scsi_hba_tran() Structure

scsi_address Structure

scsi_device Structure

scsi_pkt Structure (HBA)

Per-Target Instance Data

Transport Structure Cloning

SCSA HBA Functions

HBA Driver Dependency and Configuration Issues

Declarations and Structures

Per-Command Structure

Entry Points for Module Initialization

_init() Entry Point (SCSI HBA Drivers)

_fini() Entry Point (SCSI HBA Drivers)

Autoconfiguration Entry Points

attach() Entry Point (SCSI HBA Drivers)

detach() Entry Point (SCSI HBA Drivers)

Entry Points for SCSA HBA Drivers

Target Driver Instance Initialization

tran_tgt_init() Entry Point

tran_tgt_probe() Entry Point

tran_tgt_free() Entry Point

Resource Allocation

tran_init_pkt() Entry Point

Allocation and Initialization of a scsi_pkt(9S) Structure

Allocation of DMA Resources

Reallocation of DMA Resources for Data Transfer

tran_destroy_pkt() Entry Point

tran_sync_pkt() Entry Point

tran_dmafree() Entry Point

Command Transport

tran_start() Entry Point

Interrupt Handler and Command Completion

Timeout Handler

Capability Management

tran_getcap() Entry Point

tran_setcap() Entry Point

Abort and Reset Management

tran_abort() Entry Point

tran_reset() Entry Point

tran_bus_reset() Entry Point

tran_reset_notify() Entry Point

Dynamic Reconfiguration

SCSI HBA Driver Specific Issues

Installing HBA Drivers

HBA Configuration Properties

scsi-reset-delay Property

scsi-options Property

Per-Target scsi-options

x86 Target Driver Configuration Properties

Support for Queuing

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


Introduction to Host Bus Adapter Drivers

As described in Chapter 17, SCSI Target Drivers, the DDI/DKI divides the software interface to SCSI devices into two major parts:

Target device refers to a device on a SCSI bus, such as a disk or a tape drive. Target driver refers to a software component installed as a device driver. Each target device on a SCSI bus is controlled by one instance of the target driver.

Host bus adapter device refers to HBA hardware, such as an SBus or PCI SCSI adapter card. Host bus adapter driver refers to a software component that is installed as a device driver. Some examples are the esp driver on a SPARC machine, the ncrs driver on an x86 machine, and the isp driver, which works on both architectures. An instance of the HBA driver controls each of its host bus adapter devices that are configured in the system.

The Sun Common SCSI Architecture (SCSA) defines the interface between the target and HBA components.

Note - Understanding SCSI target drivers is an essential prerequisite to writing effective SCSI HBA drivers. For information on SCSI target drivers, see Chapter 17, SCSI Target Drivers. Target driver developers can also benefit from reading this chapter.

The host bus adapter driver is responsible for performing the following tasks: