CAN CSA-ISO IEC 14776-232-2002 Information technology – Small computer system interface (SCSI) – Part 232 Serial Bus Protocol 2 (SBP-2).pdf

1、 Information technology Small computer system interface (SCSI) Part 232: Serial Bus Protocol 2 (SBP-2)Reference numberISO/IEC 14776-232:2001(E)National Standard of CanadaCAN/CSA-ISO/IEC 14776-232:02(ISO/IEC 14776-232:2001)International Standard ISO/IEC 14776-232:2001 (first edition, 2001-11) has bee

2、n adopted withoutmodification (IDT) as CSA Standard CAN/CSA-ISO/IEC 14776-232:02, which has been approved as a NationalStandard of Canada by the Standards Council of Canada.ISBN 1-55324-896-1 December 2002The Canadian Standards Association (CSA), The Standards Council of Canada is theunder whose aus

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17、ticular purpose.Registered trade-mark of Canadian Standards AssociationCAN/CSA-ISO/IEC 14776-232:02 Part 232: Serial Bus Protocol 2 (SBP-2)Information technology Small computer system interface (SCSI) December 2002 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 14776-232:02Information technolog

18、y Smallcomputer system interface (SCSI) Part 232: Serial Bus Protocol 2(SBP-2)CSA PrefaceStandards development within the Information Technology sector is harmonized with internationalstandards development. Through the CSA Technical Committee on Information Technology (TCIT),Canadians serve as the C

19、anadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 onInformation Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO memberbody for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of theInternational Telecommunication

20、Union (ITU), Canada participates in the International Telegraph andTelephone Consultative Committee (ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada. (Acommitte

21、e membership list is available on request from the CSA Project Manager.) From time to time,ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approvaland publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update orcontact a

22、 CSA Sales representative. This Standard has been formally approved, without modification, bythe Technical Committee and has been approved as a National Standard of Canada by the StandardsCouncil of Canada.December 2002 Canadian Standards Association 2002All rights reserved. No part of this publicat

23、ion may be reproduced in any form whatsoever without the prior permissionof the publisher. ISO/IEC material is reprinted with permission. Where the words “this International Standard” appearin the text, they should be interpreted as “this National Standard of Canada”. Inquiries regarding this Nation

24、al Standard of Canada should be addressed to Canadian Standards Association 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044www.csa.caINTERNATIONALSTANDARDISO/IEC14776-232First edition2001-11Information technology Small computer system interface (SCSI) P

25、art 232: Serial Bus Protocol 2 (SBP-2)Reference numberISO/IEC 14776-232:2001(E)INTERNATIONALSTANDARDISO/IEC14776-232First edition2001-11Information technology Small computer system interface (SCSI) Part 232: Serial Bus Protocol 2 (SBP-2)PRICE CODE ISO/IEC 2001All rights reserved. Unless otherwise sp

26、ecified, no part of this publication may be reproduced or utilized in any form or by anymeans, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher.ISO/IEC Copyright Office Case postale 56 CH-1211 Genve 20 SwitzerlandXFor price, see current

27、 catalogue 2 14776-232 ISO/IEC:2001(E)CONTENTSFOREWORD 61 Scope and object. 71.1 Scope. 71.2 Object 72 Normative references 83 Definitions and notation. 93.1 Definitions 93.1.1 Conformance. 93.1.2 Glossary 93.1.3 Abbreviations .123.2 Notation 123.2.1 Numeric values 123.2.2 Bit, byte and quadlet orde

28、ring.123.2.3 Register specifications .133.2.4 State machines 154 Model (informative).174.1 Unit architecture174.2 Logical units174.3 Requests and responses .174.4 Data buffers 184.5 Target agents204.6 Ordered and unordered execution .215 Data structures.225.1 Operation request blocks (ORBs). .235.1.

29、1 Dummy ORB 245.1.2 Command block ORBs .245.1.3 Management ORBs 265.2 Page tables. 335.2.1 Unrestricted page tables. .345.2.2 Normalized page tables345.3 Status block. .355.3.1 Request status .375.3.2 Unsolicited device status396 Control and status registers406.1 Core registers .406.2 Serial Bus-dep

30、endent registers406.3 MANAGEMENT_AGENT register.416.4 Command block agent registers 416.4.1 AGENT_STATE register .426.4.2 AGENT_RESET register.436.4.3 ORB_POINTER register .436.4.4 DOORBELL register .446.4.5 UNSOLICITED_STATUS_ENABLE register4514776-232 ISO/IEC:2001(E) 3 7 Configuration ROM.467.1 Po

31、wer reset initialization .467.2 Bus information block 477.3 Root directory487.3.1 Module_Vendor_ID entry487.3.2 Node_Capabilities entry .487.3.3 Unit_Directory entry .487.4 Unit directory.497.4.1 Unit_Spec_ID entry. .497.4.2 Unit_SW_Version entry 497.4.3 Command_Set_Spec_ID entry507.4.4 Command_Set

32、entry.507.4.5 Command_Set_Revision entry507.4.6 Firmware_Revision entry517.4.7 Management_Agent entry.517.4.8 Unit_Characteristics entry 517.4.9 Reconnect_Timeout entry.527.4.10 Logical_Unit_Directory entry527.4.11 Logical_Unit_Number entry527.4.12 Unit_Unique_ID entry 537.5 Logical unit directory .

33、537.5.1 Command_Set_Spec_ID entry547.5.2 Command_Set entry.547.5.3 Command_Set_Revision entry547.5.4 Logical_Unit_Number entry 547.6 Unit unique ID leaf.548 Access .568.1 Access protocols .568.2 Login.568.3 Reconnection 578.4 Logout.589 Command execution.599.1 Requests and request lists 599.1.1 Fetc

34、h agent initialization (informative) 599.1.2 Dynamic appends to request lists (informative) 609.1.3 Fetch agent use by the BIOS (informative) .619.1.4 Fetch agent state machine .619.2 Data transfer .649.3 Completion status649.4 Unsolicited status65 4 14776-232 ISO/IEC:2001(E)10 Task management 6610.

35、1 Task sets 6610.2 Basic task management model 6610.3 Error conditions.6710.4 Task management requests.6710.4.1 Abort task6710.4.2 Abort task set 6810.4.3 Logical unit reset .6910.4.4 Target reset.6910.5 Task management event matrix.70Annex A (normative) Minimum Serial Bus node capabilities 71Annex

36、B (normative) SCSI command and status encapsulation.73Annex C (normative) Security extensions78Annex D (informative) Sample configuration ROM.81Annex E (informative) Serial Bus transaction error recovery85Annex F (informative) SCSI Architecture Model conformance .87Figure 1 Bit ordering within a byt

37、e13Figure 2 Byte ordering within a quadlet 13Figure 3 Quadlet ordering within an octlet13Figure 4 CSR specification example.14Figure 5 State machine example16Figure 6 Linked list of ORBs 18Figure 7 Directly addressed data buffer .19Figure 8 Indirectly addressed data buffer (via page table)19Figure 9

38、 Address pointer22Figure 10 ORB pointer .22Figure 11 ORB family tree23Figure 12 ORB format 23Figure 13 Dummy ORB 24Figure 14 Command block ORB .25Figure 15 Management ORB27Figure 16 Login ORB .28Figure 17 Login response 29Figure 18 Query logins ORB 30Figure 19 Query logins response format.30Figure 2

39、0 Reconnect ORB .31Figure 21 Logout ORB .32Figure 22 Task management ORB .33Figure 23 Page table element (unrestricted page table) .3414776-232 ISO/IEC:2001(E) 5 Figure 24 Page table element (when page_size equals four)34Figure 25 Status block format 36Figure 26 TRANSPORT FAILURE format for sbp_stat

40、us 38Figure 27 MANAGEMENT_AGENT format .41Figure 28 AGENT_STATE format.42Figure 29 AGENT_RESET format 43Figure 30 ORB_POINTER format.44Figure 31 DOORBELL format.45Figure 32 UNSOLICITED_STATUS_ENABLE format45Figure 33 Configuration ROM hierarchy .46Figure 34 Bus information block format 47Figure 35 M

41、odule_Vendor_ID entry format.48Figure 36 Node_Capabilities entry format 48Figure 37 Unit_Directory entry format 49Figure 38 Unit_Spec_ID entry format .49Figure 39 Unit_SW_Version entry format .49Figure 40 Command_Set_Spec_ID entry format.50Figure 41 Command_Set entry format50Figure 42 Command_Set_Re

42、vision entry format.50Figure 43 Firmware_Revision entry format.51Figure 44 Management_Agent entry format51Figure 45 Unit_Characteristics entry format .51Figure 46 Reconnect_Timeout entry format52Figure 47 Logical_Unit_Directory entry format .52Figure 48 Logical_Unit_Number entry format .52Figure 49

43、Unit_Unique_ID entry format 53Figure 50 Unit unique ID leaf format.54Figure 51 Fetch agent initialization with a dummy ORB60Figure 52 Fetch agent state machine .62Figure B.1 SCSI command block ORB .73Figure B.2 SCSI control byte73Figure B.3 Status block format for SCSI sense data.74Figure C.1 Set pa

44、ssword ORB .79Figure D.1 Basic configuration ROM 81Figure D.2 SCSI configuration ROM.83Table 1 Data transfer speeds .26Table 2 Management request functions27Table F.1 SAM-2 Service responses 89- 6 - 14776-232 ISO/IEC:2001(E)INFORMATION TECHNOLOGY SMALL COMPUTER SYSTEM INTERFACE (SCSI) Part 232: Seri

45、al bus protocol 2 (SBP-2)FOREWORD1) ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission) form thespecialized system for worldwide standardization. National bodies that are members of ISO or IEC participate inthe development of International Standar

46、ds through technical committees established by the respectiveorganization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate infields of mutual interest. Other international organizations, governmental and non-governmental, in liaison withISO and IEC,

47、also take part in the work.2) In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC1.Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting.Publication as an International Standard re

48、quires approval by at least 75 % of the national bodies casting a vote.3) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject ofpatent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.Interna

49、tional Standard ISO/IEC 14776-232 was prepared by subcommittee 25: Inter-connection of information technology equipment, of ISO/IEC joint technical committee 1:Information technology.This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.Annexes A, B and C form an integral part of this International Standard.Annexes D, E and F are for information only.14776-232 ISO/IEC:2001(E) 7 INFO