UDI, a Uniform Driver Interface

UDI, a Uniform Driver Interface

By

Project UDI

Uniform Driver Interface

Project UDI - Slide 2

What is UDI?

OS-Neutral

Platform-Neutral

Device Driver Interface

Uniform Driver Interface

Project UDI - Slide 3

Free and Open Specification

• Published on the Web

• No Licensing Fees

• Developed Jointly by SCO and Other Project UDI Members

Uniform Driver Interface

Project UDI - Slide 4

Who is Project UDI?

Uniform Driver Interface

Project UDI - Slide 5

UDI Driver Portability

• 100% Driver Source Portability

–Defines architecture, APIs and packaging format

• Binary Portability

–IA-32 and IA-64 ABIs defined

• Source and Binary Distributions

Uniform Driver Interface

Project UDI - Slide 6

OS ADriver

OS BDriver

OS ‘n’Driver

...

Proprietary driver interfaces

OneUDI Driver

Today With UDICommon driver interface

Single UDI Driver - Many OSes

Uniform Driver Interface

Project UDI - Slide 7

The UDI Solution

• One driver source for all UDI-compliant OSes

• UDI moves up IHV porting order

–More bang for the buck for IHVs

• UDI-compliant OSes get better coverage

Uniform Driver Interface

Project UDI - Slide 8

Intel Moves Closer to

Unix in Standards Effort

- Information Week

Intel Pushing Unified Unix

- InfoWorld/C-Net

Intel, Computer Makers to Forge Common Guidelines

for Unix- Wall Street Journal

Heavyweights Unite Behind Interface for Unix Servers

- PC Week

Uniform Driver Interface

Spells Relief- EE Times

UDI News Headlines

Uniform Driver Interface

Project UDI - Slide 9

Uniformity Across Device Types

• Common Execution Model

• Common Data Model

• Common Inter-Module Communication

• Common System Services

Uniform Driver Interface

Project UDI - Slide 10

UDI Fully Encapsulates Drivers

UDI

Drivers

Physical I/O Abstraction

System Services: Configuration Resource Allocation Inter-Module Communication Tracing & Logging Error Handling Time Management Buffer Management

Operating System

UDI Environment

Application Programs

CPU and I/O Hardware (PIO, DMA, Interrupts)

I/O Requests

Uniform Driver Interface

Project UDI - Slide 11

Embedding OS

UDI Environment

Path From Application to DriverIntegrated Implementation

I/O Subsystem

Application

UDI Driver

Physical I/O

Adapter or System Hardware

OS Requests

UDI Channel Operations

Interrupts

UDI Services

Hardware Access

Uniform Driver Interface

Project UDI - Slide 12

UDI: Next-Generation Technology

• Instance Independence

–Hot plug/hot swap adapters and devices

• Location Independence

–Distributed environments and I/O processors

Uniform Driver Interface

Project UDI - Slide 13

UDI: Next-Generation Technology(continued)

• Implicit MP Synchronization

–No lock primitives

• Support for Field-Installable 3rd-Party Extensions

–Adds new device models

Uniform Driver Interface

Project UDI - Slide 14

UDI In Action

First Prototype Completed 12/9/97

Alpha

Single Driver Source, no #ifdefs, No modificationsSingle Driver Source, no #ifdefs, No modifications

Tru64 UNIXTru64 UNIX

64 bit Alpha64 bit Alpha

SCO UnixwareSCO Unixware

32 bit Intel32 bit IntelSUN SolarisSUN Solaris

32 bit UltraSparc32 bit UltraSparc

HP-UXHP-UX

32 bit PA_RISC32 bit PA_RISC

IBM AIXIBM AIX

PowerPCPowerPC

NCR MP-RASNCR MP-RAS

32 bit Intel32 bit Intel

AdaptersAdapters

Adaptec SCSIAdaptec SCSI

Interphase 100BTInterphase 100BT

Uniform Driver Interface

Project UDI - Slide 15

UDI Information

Web page

http://www.sco.com/UDI