ANSI-INCITS-TR-16-1997.pdf
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1、INCITS TR-16-1997 Information Technology SCSI-3 Generic Packetized Protocol (SCSI-GPP) Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 12:37:08 MDTNo reproduction or networking
2、 permitted without license from IHS -,-,- X3/TR-16-1997 Revision 9 of X3-991 D X3 Technical Report - Small Computer System Interface - 3 Generic Packetized Protocol (SCSI-GPP) Secretariat Computer and Business Equipment Manufacturers Association Abstract SCSI-3 Generic Packetized Protocol (SCSI-3 GP
3、P) defines a transport protocol that per- mits an inter-operable common mapping of the Small Computer System Interface - 3 (SCSI-3) functions to several physical interfaces that do and do not have a native SCSI-3 protocol mapping. In support of such heterogeneous sytems environments (e.g., SCSI-3 pa
4、rallel interface, Fibre Channel, and Internet), some implementors may choose to use GPP as an alternate protocol to provide common software and transportation services across several interfaces. Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Empl
5、oyees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 12:37:08 MDTNo reproduction or networking permitted without license from IHS -,-,- X3s Technical Report Series This Technical Report is one in a series produced by the Accredited Standards Committee, X3, Information Technology. The S
6、ecretariat for X3 is held by the Information Technology Industry Council (ITI), 1250 Eye Street, NW, Suite 200, Washington, DC 20005. As a by-product of the standards development process and the resources of knowledge devoted to it, X3 from time to time produces Technical Reports. Such Technical Rep
7、orts are not standards, nor are they intended to be used as such. X3 Technical Reports are produced in some cases to disseminate the technical and logical con- cepts reflected in standards already published or under development. In other cases, they derive from studies in areas where it is found pre
8、mature to develop a standard due to a still-changing technology, or inappropriate to develop a rigorous standard due to the existence of a number of viable options, the choice of which depends on the users particular requirements. These Technical Reports, thus, provide guidelines, the use of which c
9、an result in greater consistency and coherence of information processing systems. When the draft Technical Report is completed, the Technical Committee approval process is the same as for a draft standard. Processing by X3 is also similar to that for a draft standard. CAUTION: The developers of this
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14、 the use of this technical report. Published by American National Standards Institute 11 West 42nd Street, New York, New York 10036 Copyright 01 997 by American National Standards Institute All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval sys
15、tem or otherwise, without prior written permission of the publisher. Printed in the United States of America Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 12:37:08 MDTNo repr
16、oduction or networking permitted without license from IHS -,-,- SCSI-3 GPP REV 9. January 12. 1995 Contents Page Foreword ix Introduction . 1 Scope 1 1.1Application 1 1.2 Structure . 2 1.3 Relationship to standards 2 2References 5 5 3 Definitions. abbreviations and symbols 7 3.1 Definitions 7 3.2 Ab
17、breviations and symbols 9 4General 12 4.1Overview 12 4.2Convention.s . 12 4.3 Logical system description 13 4.4 Description of logical operations . 13 4.5 Statement of support for SAM requirements 16 4.6 Logical system model 16 I Copyright American National Standards Institute Provided by IHS under
18、license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 12:37:08 MDTNo reproduction or networking permitted without license from IHS -,-,- SCSI-SCSI-3 GPP REV 9. January 12.1995 4.7 Mandatory requirements 20 5 GPP Tasks and Task management . 22 5.1.1 Par
19、ameter requirements (mandatory) . 22 5.1.2 Task sense data (mandatory) 23 5.1.3 GPP identification (mandatory) . 23 5.1.3.2 Target identification (mandatory) 24 5.1 -3.4 GPP port number (mandatory) 24 5.1.4 Commands (mandatory) 24 5.1.5 Status (mandatory) . 25 5.2 Task Set management (mandatory) 26
20、5.3 Task termination (mandatory) . 27 5.3.1 Normal Task termination 28 5.3.2 Abnormal Task termination 28 5.3.2.1 Initiator-caused Task termination 28 5.3.2.2 Target-caused Task termination . 28 5.4 Assignment termination (mandatory) . 28 5.5 Path group operations . 28 5.5.1 Single path mode (mandat
21、ory) . 28 5.5.2 Multiple path mode (optional) . 29 5.5.3 Single path status (mandatory) . 29 5.5.4 Multiple path status (optional) 29 5.5.5 Path group disbanding (optional) 29 5.1Tasks 22 5.1.3.1 Initiator identification (mandatory) . 23 5.1.3.3 GPP address for a port (mandatory) . 24 5.1.3.5 Logica
22、l unit identification (mandatory) 24 5.1.6 Asynchronous Event Notification (mandatory) . 25 5.1.7 Auto-Contingent Allegiance (mandatory) . 26 6 GPP Information Packet structure . 30 6.1 Information Packet layout 30 6.2 Interface control prefix . 31 6.3.1 Message ILE 36 6.3 Interface Logical Elements
23、 (ILEs) 35 6.3.2 Command descriptor block ILE . 36 6.3.3 Command parameter data ILE . 37 6.3.4 Command response data ILE 37 6.3.5 Logical data ILE . 37 6.3.6 Status ILE 37 6.3.7 Autosense ILE 37 7 GPP task control 39 7.1 Message structure 40 7.2 GPP primary messages 43 7.2.1 ABORT TASK . 43 7.2.2 AB
24、ORT TASK SET . 43 7.2.3ASSlGN 43 ii Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 12:37:08 MDTNo reproduction or networking permitted without license from IHS -,-,- SCSI-3 GP
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