CN102455986A - Command transmission mechanism - Google Patents
Command transmission mechanism Download PDFInfo
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- CN102455986A CN102455986A CN2010105223313A CN201010522331A CN102455986A CN 102455986 A CN102455986 A CN 102455986A CN 2010105223313 A CN2010105223313 A CN 2010105223313A CN 201010522331 A CN201010522331 A CN 201010522331A CN 102455986 A CN102455986 A CN 102455986A
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Abstract
The invention provides a command transmission mechanism. The mechanism is suitable for a storage system with a serial port and comprises a serial attached small computer system interface (SAS) initiator and a plurality of SAS targets, wherein the SAS initiator receives a diagnostic command from the serial port, then packages the diagnostic command data in a serial SCSI communication protocol (SSP) command frame in sequence and transmits the SSP command frame to command transmission destination devices; as the command transmission destination devices, the SAS targets receive the SSP command frame and then parse the command data in the command frame, execute the command data to generate execution results, package the execution results in a response frame and transmit the response frame to the SAS initiator in sequence; and the SAS initiator parses the response frame to obtain the execution results of the diagnostic command and transmits the execution results of the diagnostic command to the serial port.
Description
Technical field
The invention relates to a kind of instruction pass through mechanism, and particularly relevant for a kind of instruction pass through mechanism that is used to diagnose small computer system interface extender connected in series (SAS Expander).
Background technology
(Serial Attached SCSI SAS) is a kind of technology of computer line concentration to small computer system interface connected in series, and its function mainly is the data transmission as peripheral part, for example: equipment such as hard disk, CD-ROM and the interface that designs.Small computer system interface connected in series is by parallel small computer system interface (small computersystem interface; SCSI) the entity stores interface develops, and is the new storage interface standard by ANSI INCITS T10 technical committee (T10 committee) exploitation and maintenance.Compare with parallel mode, serial mode can provide communication transmission speed faster and configuration more easily.Small computer system interface connected in series in addition and support are compatible with serial ATA (SATA) equipment, and both can use similar cable.
Small computer system interface extender connected in series (SAS expander is hereinafter to be referred as the SAS extender) helps the interchange between numerous SAS devices.This extender comprises two or more outside ECP Extended Capabilities Ports, and each extender inside comprises at least one the SAS management communication that is used to manage agreement device (internal SMP device) and itself also can comprise its support SSP agreement (internal SSP device) of several SAS devices.With regard to a stocking system; It has several SAS extenders, and each SAS extender all has a serial port that can link with the outside and support the SSP agreement and OEM (original equipment manufacturer) operational code that can the identifying and diagnosing instruction and can carry out a firmware of diagnostic instruction.Yet, in the time need doing the diagnosis of hardware/module/base station (Enclosure), must switch the serial port of so far specific SAS extender by a switching device shifter, so that transmit diagnostic instruction to the specific SAS extender of stocking system.Therefore, this stocking system framework not only causes manufacturing cost to improve, and also makes the space of stocking system effectively to dwindle, and is difficult on this kind stocking system framework, carrying out diagnostic operation, more is difficult for carrying out integration testing.
Summary of the invention
The present invention provides a kind of instruction pass through mechanism, can make stocking system only need one serial port, with the space of saving stocking system, and is easy to carry out diagnostic operation, more need not use switching device of serial ports.
The present invention proposes a kind of instruction pass through mechanism; Be applicable to a stocking system; Wherein this stocking system has a serial port; And this stocking system comprises a serial and connects the startup of small computer system interface and a plurality of small computer system interface target connected in series, and this instruction pass through mechanism comprises that one of them is a diagnostic instruction of an instruction transmission destination device with those small computer system interface targets connected in series from this serial port reception in this small computer system interface startup connected in series.The instruction data that this small computer system interface connected in series starts this diagnostic instruction is packaged in the serial SCSI communications protocol instruction frame; And should instruct a serial of transmitting destination device to connect small computer system interface address according to corresponding, and transmit this serial SCSI communications protocol instruction frame to this instruction and transmit destination device.Transmit as this instruction after this this serial of small computer system interface target reception SCSI communications protocol instruction frame connected in series of destination device; Analyze this instruction data in this serial SCSI communications protocol instruction frame in regular turn, carrying out should the instruction data and produce a diagnosis execution result, packing this diagnosis execution result and respond in the frame in one, and transmit and should respond extremely this small computer system interface startup connected in series of frame.This small computer system interface connected in series starts to receive to be somebody's turn to do to be responded after the frame, analyzes this response frame to obtain a diagnostic instruction execution result and to transmit this diagnostic instruction execution result to this serial port.
In one embodiment of this invention, above-mentioned instruction pass through mechanism wherein should the instruction data comprise original equipment manufacturer's operational code, an instruction title and an order parameter at least.
In one embodiment of this invention; Above-mentioned instruction pass through mechanism; Wherein should small computer system interface target connected in series carry out this instruction data and the step that produces this execution result also comprises and analyzes whether this original equipment manufacturer's operational code is the diagnostic instruction operational code as what destination device was transmitted in this instruction; Also import this order parameter into this instruction title program if then call out this instruction title to obtain an instruction title program, carrying out should instruction title program.
In one embodiment of this invention; Above-mentioned instruction pass through mechanism; Wherein this small computer system interface connected in series starts the step that should the instruction data be packaged in this serial SCSI communications protocol instruction frame and also comprises and this original equipment manufacturer's operational code is added a data buffer zone in this serial SCSI communications protocol instruction frame (Command Data Buffer is in the operational code field in CDB).
In one embodiment of this invention; Above-mentioned instruction pass through mechanism; Wherein this small computer system interface connected in series starts before the step of transmitting this serial SCSI communications protocol instruction frame, comprises also that this small computer system interface connected in series starts should instruct the transmission destination device to convert corresponding this small computer system interface connected in series address to.
In one embodiment of this invention; Above-mentioned instruction pass through mechanism; Wherein this small computer system interface connected in series starts and carries out one and transmit handling procedure and this instruction data is packaged in the serial SCSI communications protocol instruction frame carrying out; And be passed to the step that destination device is transmitted in this instruction, and analyze this response frame and transmit the step of this diagnostic instruction execution result to this serial port.
In one embodiment of this invention, above-mentioned instruction pass through mechanism, wherein this serial SCSI communications protocol instruction frame and this response frame all meet a serial SCSI communications protocol standard.
In one embodiment of this invention, above-mentioned instruction pass through mechanism, wherein this small computer system interface startup connected in series comprises an environment maintenance modules small computer system interface connected in series extender or a proximal spread device.
In one embodiment of this invention, above-mentioned instruction pass through mechanism, wherein each those small computer system interface target connected in series comprises that a serial connects a small computer system interface extender or a far-end extender.
Based on above-mentioned; The present invention connects the small computer system interface with a serial and starts via single serial port reception instruction; And transmit this instruction to small computer system interface target connected in series via the instruction pass through mechanism according to serial SCSI communications protocol, with the program of the instruction title that comprised in the execution command.Stocking system only needs a serial port to receive the instruction from virtual terminal thus; Small computer system interface connected in series starts can be passed to received instruction any one and its small computer system interface target connected in series that links, with checking (diagnosis) program of the hardware (for example extender) of carrying out small computer system interface target connected in series.Therefore can save the space of stocking system, reduce the manufacturing cost of stocking system, reduce the complexity of carrying out diagnostic operation, more need not use switching device of serial ports.
Description of drawings
For let above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, elaborate below in conjunction with the accompanying drawing specific embodiments of the invention, wherein:
Fig. 1 is a kind of instruction pass through mechanism general flow chart according to one embodiment of the invention.
Fig. 2 is the synoptic diagram according to the stocking system of one embodiment of the invention.
The main element symbol description:
S101～S141: instruction pass through mechanism process step
10: transmit handling procedure
20: firmware
200: stocking system
202: serial port
204: small computer system interface connected in series starts
206
1, 206
2, 206
n: small computer system interface target connected in series
208,210: small computer system interface link connected in series
212: small computer system interface linked network connected in series
214: virtual terminal
Embodiment
Fig. 1 is a kind of instruction pass through mechanism general flow chart according to one embodiment of the invention.Fig. 2 is the synoptic diagram according to the stocking system of one embodiment of the invention.Please with reference to Fig. 1 and Fig. 2; The stocking system 200 of present embodiment has a serial port (serial port) 202; In addition; This stocking system 200 comprises a serial and connects small computer system interface startup (serial attached small computer system interface initiator, SAS initiator start hereinafter to be referred as SAS) 204 and a plurality of small computer system interface target connected in series (serial attached small computer system interface target; SAS target is hereinafter to be referred as the SAS target) 206
1～206
nWherein, SAS starts 204 and links (SAS link via small computer system interface connected in series respectively with each SAS target; Hereinafter to be referred as SAS link) 208,210 and small computer system interface linked network connected in series (SAS link fabric is hereinafter to be referred as the SAS linked network) 212 interlink.
In addition, above-mentioned SAS startup 204 for example is that a serial connects small computer system interface extender (SASexpander, SAS expander).Moreover above-mentioned SAS target for example is that a serial connects small computer system interface extender (SAS expander).
In step S101, SAS startup 204 receives from serial port 202 and is assigned by 214 of virtual terminals, and one of them is the diagnostic instruction (diagnosticcommand) that destination device is transmitted in an instruction with the SAS target.Wherein, this diagnostic instruction comprises an original equipment manufacturer (original equipmentmanufacturer, OEM) operational code.The diagnostic instruction assigned via serial port 202 of virtual terminal 214 just is not for meeting the follow-up serial SCSI communications protocol of mentioning (serial SCSI protocol, instruction SSP).In addition, must be noted that this diagnostic instruction except comprising an OEM operational code (OP code), also comprise an instruction title (command name) and an order parameter instruction data and SAS target designations such as (command parameters) at least.In addition, above-mentioned virtual terminal 214 for example is on a computer system and its virtual terminal to be arranged, and comprises notebook computer.Merit attention to such an extent that be, this OEM operational code must be in keeping the scope of giving manufacturing supplier (vendor).According to the SAS specifications, the scope of operational code C0h to DFh and E0h to FFh is to keep to give to make supplier's use.So can therefrom get the OEM operational code that any one is used as diagnostic instruction.In the subsequent implementation example, for example be the OEM operational code of diagnostic instruction with DFh.
For example, in an embodiment, virtual terminal 214 is assigned a diagnostic instruction and is: PassTrough " SASExpander 3 " DFh VpdShow Middleplane.That is 214 times above-mentioned ordering to SAS startup 204 of virtual terminal its objective is and want to learn SAS target 206
2VPD data (Vital Private Data) on the middle plane that (for example its SAS address be 500605B00002727F SAS Expander 3) connected.Therefore, above-mentioned diagnostic instruction comprises OEM operational code (that is the DFh in the above-mentioned diagnostic instruction), instruction title (that is the VpdShow in the above-mentioned diagnostic instruction) and an order parameter instruction data and SAS target designations (that is the SAS Expander 3 in the above-mentioned diagnostic instruction) such as (that is the Middleplane in the above-mentioned diagnostic instruction) at least.
Afterwards; In step S105; SAS starts the 204 instruction data with diagnostic instruction and is packaged in serial SCSI communications protocol instruction frame (SSP command frame; Hereinafter to be referred as SSP instruction frame) in, just the instruction title in the diagnostic instruction (for example being VpdShow), order parameter (for example being Middleplane) and OEM operational code (for example being DFh) are packaged in the SSP instruction frame that meets serial SCSI communications protocol.Wherein SAS startup 204 also comprises the step that the instruction data is packaged in the SSP instruction frame with in the operational code field in the data buffer zone in the adding of the OEM operational code in the diagnostic instruction SSP instruction frame.It should be noted that; In the diagnostic instruction (" PassTrough " SAS Expander 3 " DFh VpdShow Middleplane ") of being given an example in the foregoing description; DFh is the OEM operational code, and it will be put in the operational code field in the SSP instruction frame, be 206 and be passed to label
2SAS target " SAS Expander 3 ".In addition, when label be 206
2SAS target " SAS Expander 3 " this operation field of inspection earlier when receiving this SSP instruction frame; Confirm whether it is DFh; If represent that then the entrained data of this SSP instruction frame is diagnostic instruction; Then analyze this diagnostic instruction title and parameter, and call out this diagnostic instruction title in view of the above, to obtain an instruction title program.Further, from the diagnostic instruction of virtual terminal 214: " PassTrough " SAS Expander 3 " DFh VpdShow Middleplane ", wherein OEM operational code DFh can be omitted.Just only use an OEM operational code DFh, so SAS startup 204 can add DFh in the operational code field of SSP instruction frame automatically because of all diagnostic instructions.
In addition; In an embodiment; SAS startup 204 is packaged in the instruction data before the step in the SSP instruction frame; Comprise that also SAS starts 204 and will instruct transmission destination device (for example being " SAS Expander 3 ") to convert corresponding serial connection small computer system interface address (SAS address hereinafter to be referred as the SAS address, for example is 500605B00002727F) to.Wherein, The method that SAS startup 204 will instruct the transmission destination device to convert corresponding SAS address to comprises that SAS starts the title reference one SAS device-SAS address translation table (routine SAS device name and SAS address translation table as shown in table 1) that transmits destination device according to instruction, and obtains the corresponding SAS address that destination device is transmitted in instruction.
Table 1:SAS device-SAS address translation table
| The SAS device name | The SAS address | The component symbol of corresponding diagram 2 |
| local?Expander | 500605B00002721F | ?204 |
| SAS?expander?2 | 500605B00002724F | ?206 1 |
| SAS?expander?3 | 500605B00002727F | ?206 2 |
| … | ?… | |
| SAS?expander?n | 500605B0000272AF | ?206 n |
It should be noted that; Can start 204 with its symmetric form multiprocessing (symmetricmultiprocessing by SAS; SMP) trace routine (Discovery Process) goes for all the SAS addresses on the whole SAS network, and imports voluntarily to set up the SAS device-SAS address translation table as table 1 by SAS startup 204 automatic adding SAS device names or by the user.
Then; In step S111; SAS starts the 204 SAS addresses according to corresponding instruction transmission destination device; Link 210 and transmit SSP instruction frame to instruction transmission destination device via SAS link 208, SAS linked network 212 and SAS, in this embodiment, above-mentioned instruction transmission destination device for example is a SAS target 206
2(its device name is " SAS Expander 3 ").That is; Unlatching SSP according to standard connects (Open SSP connection) agreement; Carry out the connection of SSP communication by the SAS address (for example being the 500605B00002727F shown in the table 1) that destination device is transmitted in the SAS address (for example being the 500605B00002721F shown in the table 1) and the instruction of SAS startup 204; After accomplishing unlatching SSP connection, SAS starts 204 and instructions transmission destination device just can carry out the SSP communication.
Afterwards, in step S115, SAS target 206
2Receive after the SSP instruction frame, in analysis (parse) SSP instruction frame in the instruction data.More particularly, the SAS target 206
2Operational code field in the data buffer zone of analysis SSP instruction frame; Check whether it is OEM operational code (for example being DFh); If represent that the entrained data of this SSP instruction frame is diagnostic instruction title and its parameter, and go in view of the above to analyze entrained data and therefrom obtain diagnostic instruction title and its parameter value.
Then, in step S121, SAS target 206
2Execution should the instruction data and is produced an execution result.More particularly, the SAS target 206
2Instruction title in the call instruction data (for example VpdShow) is to obtain importing this instruction title program (for example word string Middleplane being write among the input variable parameters C omponent of VpdShow function) into according to instruction title program and with this order parameter; Carry out this instruction title program (for example carrying out the function program of VpdShow (Component)); Must know that all SAS destination devices all contain the function of diagnostic instruction title; Real work as for function is different along with the SAS destination device, and is a group diagnostic instruction.And the diagnostic instruction that the virtual terminal 214 that the foregoing description is lifted is assigned (" PassTrough " SAS Expander 3 " DFh VpdShow Middleplane ") is to SAS target 206
2, and by SAS target 206
2After the execution, obtain an execution result and for example be: " PN YJ139-01 SNYJ1234567 VN Inventec DT 07/2010 FT MIDPLANE ".
Continuous and, in step S125, SAS target 206
2Pack above-mentioned execution result in a response frame that meets serial SCSI communications protocol.Then, the SAS target 206
2Link 208 and transmit above-mentioned response frame via SAS link 210, SAS linked network 212 and SAS to SAS startup 204 (step S131).
Afterwards; In step S135; SAS starts 204 and receives after the response frame, and analysis is responded frame to obtain a diagnostic instruction execution result, for example is an output word string (for example being " PN YJ139-01 SNYJ1234567 VN Inventec DT 07/2010 FT MIDPLANE ").At last; In step S141; SAS starts 204 and transmits this diagnostic instruction execution result to serial port 202, and is passed to hardware (module) diagnostic result (for example be " PNYJ139-01 SN YJ1234567 VN Inventec DT 07/2010 FT MIDPLANE ") of virtual terminal 214 with repayment SAS target via serial port 202.
It should be noted that; In present embodiment; It is to carry out one to transmit handling procedure (pass-through handler) 10 that SAS starts 204, the instruction data is packaged in (step S105) in the SSP instruction frame, is passed to this instruction and transmits destination device (step S111), analysis response frame (step S135) and transmit diagnostic instruction execution result (step S141) carrying out.Moreover; Transmit the SAS target of destination device as instruction; Then be by carrying out its a piece of wood serving as a brake to halt a carriage body (firmware) 20, with the program (step S121) of analyzing OEM operational code (step S115) in the SSP instruction frame, execution command title, packing execution result in responding frame (step S125) and transmit and respond frame and start 204 (step S131) to SAS.
Based on above-mentioned; The present invention starts via single serial port reception instruction with a SAS; And this instructs to the SAS target via the transmission of instruction pass through mechanism to according to serial SCSI communications protocol; With the program of the instruction title that comprised in the execution command, afterwards the SAS target more by according to serial SCSI communications protocol via instruction pass through mechanism passback instruction execution result.Stocking system only needs a serial port to receive the instruction from virtual terminal thus; SAS starts and can received instruction be passed to any one and its SAS target that links, with checking (diagnosis) program of the hardware (for example extender) of execution SAS target.Therefore can save the space of stocking system, reduce the manufacturing cost of stocking system, reduce the complexity of carrying out diagnostic operation, more need not use switching device of serial ports.
Though the present invention discloses as above with preferred embodiment; Right its is not that any those skilled in the art are not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing a little modification and perfect, so protection scope of the present invention is when being as the criterion with what claims defined.
Claims (9)
1. an instruction pass through mechanism is applicable to a stocking system, and wherein this stocking system has a serial port, and this stocking system comprises a serial and connect the small computer system interface and start and a plurality of small computer system interface target connected in series, comprising:
One of them is the diagnostic instruction that destination device is transmitted in an instruction with said small computer system interface target connected in series from this serial port reception in this small computer system interface startup connected in series;
The instruction data that this small computer system interface connected in series starts this diagnostic instruction is packaged in the serial SCSI communications protocol instruction frame; And should instruct a serial of transmitting destination device to connect small computer system interface address according to corresponding, and transmit this serial SCSI communications protocol instruction frame to this instruction and transmit destination device;
Transmit as this instruction after this this serial of small computer system interface target reception SCSI communications protocol instruction frame connected in series of destination device; Analyze this instruction data in this serial SCSI communications protocol instruction frame in regular turn, carrying out should the instruction data and produce an execution result, pack this execution result and respond in the frame in one, and transmit and should respond frame to should small computer system interface startup connected in series; And
This small computer system interface connected in series starts to receive to be somebody's turn to do to be responded after the frame, analyzes this response frame to obtain a diagnostic instruction execution result and to transmit this diagnostic instruction execution result to this serial port.
2. instruction pass through mechanism as claimed in claim 1 is characterized in that, this instruction data comprises original equipment manufacturer's operational code, an instruction title and an order parameter at least.
3. instruction pass through mechanism as claimed in claim 2 is characterized in that, as this instruction transmit destination device should small computer system interface target this instruction data of execution connected in series and the step that produces this execution result also comprises:
Analyze this original equipment manufacturer's operational code; And
Call out this instruction title obtaining an instruction title program, and import this order parameter into this instruction title program, carrying out should instruction title program.
4. instruction pass through mechanism as claimed in claim 2; It is characterized in that this small computer system interface connected in series starts the step that should the instruction data be packaged in this serial SCSI communications protocol instruction frame and also comprises this original equipment manufacturer's operational code is added in the operational code field in the data buffer zone in this serial SCSI communications protocol instruction frame.
5. instruction pass through mechanism as claimed in claim 1; It is characterized in that; This small computer system interface connected in series starts before the step of transmitting this serial SCSI communications protocol instruction frame, comprises also that this small computer system interface connected in series starts should instruct the transmission destination device to convert corresponding this small computer system interface connected in series address to.
6. instruction pass through mechanism as claimed in claim 1; It is characterized in that; This small computer system interface connected in series starts to be carried out one and transmits handling procedure and this instruction data is packaged in the serial SCSI communications protocol instruction frame carrying out; And be passed to the step that destination device is transmitted in this instruction, and analyze this response frame and transmit the step of this diagnostic instruction execution result to this serial port.
7. instruction pass through mechanism as claimed in claim 1 is characterized in that, this serial SCSI communications protocol instruction frame and this response frame all meet a serial SCSI communications protocol standard.
8. instruction pass through mechanism as claimed in claim 1 is characterized in that, this small computer system interface startup connected in series comprises that a serial connects small computer system interface extender.
9. instruction pass through mechanism as claimed in claim 1 is characterized in that, each said small computer system interface target connected in series comprises that a serial connects small computer system interface extender.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105223313A CN102455986A (en) | 2010-10-18 | 2010-10-18 | Command transmission mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105223313A CN102455986A (en) | 2010-10-18 | 2010-10-18 | Command transmission mechanism |
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| CN102455986A true CN102455986A (en) | 2012-05-16 |
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| CN2010105223313A Pending CN102455986A (en) | 2010-10-18 | 2010-10-18 | Command transmission mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881337A (en) * | 2015-02-06 | 2015-09-02 | 北京飞杰信息技术有限公司 | Method for expanding novel functions of SCSI (small computer system interface) cases |
| CN105141532A (en) * | 2015-07-27 | 2015-12-09 | 浪潮(北京)电子信息产业有限公司 | Routing method and router |
| CN107544889A (en) * | 2017-08-24 | 2018-01-05 | 郑州云海信息技术有限公司 | A kind of extended method and device of the information element of SES agreements |
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| US7668925B1 (en) * | 2005-01-28 | 2010-02-23 | Pmc-Sierra, Inc. | Method and apparatus for routing in SAS using logical zones |
| CN101694635A (en) * | 2009-10-22 | 2010-04-14 | 中兴通讯股份有限公司 | Control method and system based on virtual tape library backup and near-line storage node |
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| US20040205259A1 (en) * | 2003-03-26 | 2004-10-14 | Brea Technologies, Inc. | Initiator connection tag for simple table lookup |
| US7668925B1 (en) * | 2005-01-28 | 2010-02-23 | Pmc-Sierra, Inc. | Method and apparatus for routing in SAS using logical zones |
| CN101694635A (en) * | 2009-10-22 | 2010-04-14 | 中兴通讯股份有限公司 | Control method and system based on virtual tape library backup and near-line storage node |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881337A (en) * | 2015-02-06 | 2015-09-02 | 北京飞杰信息技术有限公司 | Method for expanding novel functions of SCSI (small computer system interface) cases |
| CN104881337B (en) * | 2015-02-06 | 2017-04-05 | 北京飞杰信息技术有限公司 | The method for expanding SCSI enclosure New function |
| CN105141532A (en) * | 2015-07-27 | 2015-12-09 | 浪潮(北京)电子信息产业有限公司 | Routing method and router |
| CN105141532B (en) * | 2015-07-27 | 2018-05-15 | 浪潮(北京)电子信息产业有限公司 | A kind of method for routing and router |
| CN107544889A (en) * | 2017-08-24 | 2018-01-05 | 郑州云海信息技术有限公司 | A kind of extended method and device of the information element of SES agreements |
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Application publication date: 20120516 |