CN102346717B - Intelligent platform management interface (IPMI) message transmission device, system and computer equipment - Google Patents
Intelligent platform management interface (IPMI) message transmission device, system and computer equipment Download PDFInfo
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- CN102346717B CN102346717B CN201010246368.8A CN201010246368A CN102346717B CN 102346717 B CN102346717 B CN 102346717B CN 201010246368 A CN201010246368 A CN 201010246368A CN 102346717 B CN102346717 B CN 102346717B
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Abstract
The invention is applied in the field of computers, and provides an intelligent platform management interface (IPMI) message transmission device, an IPMI message transmission system and computer equipment. The IPMI message transmission device comprises an intelligent platform management bus (IPMB) message receiving and processing task unit, an IPMB message receiving interface, an IPMB message transmitting interface and an IPMB message transmitting and response waiting interface, wherein the IPMB message receiving and processing task unit is used for acquiring message from an IPMB message buffer queue, performing response message matching if the acquired message is response message, and putting the request message into an IPMB request message queue if the acquired message is request message; the IPMB message receiving interface is used for reading the message in the IPMB request message queue; the IPMB message transmitting interface is used for transmitting the verification passing IPMI message by the drive of an I2C bus; and the IPMB message transmitting and response waiting interface is used for calling the IPMI request message transmitted by the IPMB message transmitting interface and acquiring the corresponding response message acquired by the IPMB message receiving and processing task unit. The device and the system provide connection guarantee for construction of an IPMI management network.
Description
Technical field
The invention belongs to computer realm, particularly relate to a kind of IPMI massage transmission device, system and computer equipment.
Background technology
In IPMI (Intelligent Platform Management Interface, IPMI) specification, support the platform management functions carrying out expanding system by increasing extra Management Controller.Communication is realized by Intelligent Platform Management Bus (Intelligent Platform Management Bus, IPMB) between these Management Controllers.IPMB bus is based on I
2the universal serial bus of C, can carry intelligence and non intelligent I in IPMB bus
2c equipment.
Intelligent Platform Management Bus agreement (Intelligent Platform Management Bus Communications Protocol Specification v1.0) defines the byte level host-host protocol of the IPMI message bag between smart machine, this agreement and I
2c physical interface constitutes IPMB bus jointly.
The communication mechanism of IPMB bus use request (request)/response (response) (sends a request message when giving a smart machine, this equipment can return a response message), request message and response message form as shown in Figure 1, wherein:
Rs Slave Addr. represents the I of request destination
2c equipment is from address, and being used for indicating this request message is whose is issued;
Rq Slave Addr. represents the I of request sender
2c equipment is from address, and being used for indicating this request message is who sends;
Net Fn represents network function number, in IPMI specification, by network function number, order is divided into different functional domains to manage, and the odd even by network function number in IPMB protocol message distinguishes request message or response message;
RsLUN represents answering equipment logical partition, and being used to refer to this order is by which logic module of object equipment replied;
RqLUN represents requesting service logical partition, and being used for indicating this request command is which logic module of source device sends;
RqSeq represents request message sequence number, and being used for differentiation is resend message or new information;
Cmd represents command number, it with network function number together with uniquely determine an IPMI order;
Data byte represents order data territory, and different order length is different;
Checksum represents message check word, make entire message be added and be 0.
No matter be request message or response message, for I
2c bus, is all transmitted by " main WriteMode " (Master Write).
In existing Intelligent Platform Management Bus agreement, define only the data layout of IPMI message and some ardware features of interface, lack concrete implementation.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of IPMI massage transmission device, provides the implementation that IPMB drives, achieves the transmission of IPMB message.
The embodiment of the present invention is achieved in that a kind of IPMI massage transmission device, and described device comprises:
IPMB message sink Processing tasks unit, for obtaining message from IPMB bus message buffer queue, if the message obtained is response message, then carry out response message coupling, if the message obtained is request message, then request message is put into the queue of IPMB request message;
IPMB message sink interface, for reading the message in the queue of described IPMB request message;
IPMB message transmission interface, for passing through I by verifying the IPMI message passed through
2c bus driver sends; And
IPMB message sends and wait acknowledge interface, sends IPMI request message, and obtain the response message of the correspondence acquired by described IPMB message sink Processing tasks unit for calling described IPMB message transmission interface.
Another object of the embodiment of the present invention is to provide a kind of IPMI message delivery system, and described system comprises I2C bus driver and IPMB drives, and IPMI firmware application programs calls described I
2the interface of C bus driver carries out IPMI information receiving and transmitting, and the data transmit-receive that described IPMB drives is by described I
2c bus driver realizes;
Described IPMB drives and comprises:
IPMB message sink Processing tasks unit, for obtaining message from IPMB bus message buffer queue, if the message obtained is response message, then carry out response message coupling, if the message obtained is request message, then request message is put into the queue of IPMB request message;
IPMB message sink interface, for reading the message in the queue of described IPMB request message;
IPMB message transmission interface, for passing through described I by verifying the IPMI message passed through
2c bus driver sends; And
IPMB message sends and wait acknowledge interface, sends IPMI request message, and obtain the response message of the correspondence acquired by described IPMB message sink Processing tasks unit for calling described IPMB message transmission interface.
Another object of the embodiment of the present invention is to provide a kind of computer equipment comprising above-mentioned IP MI message delivery system.
Embodiments provide concrete structure and the flow process of IPMB bus driver, achieve the transmission of IPMI message, thus achieve Intelligent Platform Management Bus agreement, the establishment for IPMI intelligent platform management network provides to connect and ensures.
Accompanying drawing explanation
Fig. 1 is the format chart of the IPMI request message that provides of prior art and response message;
Fig. 2 is the IPMB bus link model schematic diagram that the embodiment of the present invention provides;
Fig. 3 is the structural drawing of the IPMI message delivery system that the embodiment of the present invention provides;
Fig. 4 is the structural drawing of the IPMB message sink Processing tasks unit that the embodiment of the present invention provides;
Fig. 5 is that the IPMB message that the embodiment of the present invention provides sends and the structural drawing of wait acknowledge interface;
Fig. 6 is that the IPMB that the embodiment of the present invention provides drives and I
2relation schematic diagram between C bus driver and IPMI firmware application programs;
Fig. 7 be each interface function and inside during the IPMB that provides of the embodiment of the present invention drives IPMB message handling task between co-operating hierarchical relationship, and between data flow figure;
Fig. 8 is the I that the embodiment of the present invention provides
2the realization flow figure of C bus interrupt processing function;
Fig. 9 is the realization flow figure of the IPMB message sink Processing tasks function that the embodiment of the present invention provides;
Figure 10 is that the IPMB bus interface that the embodiment of the present invention provides sends message and the realization flow figure of the interface function of wait acknowledge message.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiments provide that IPMI smart machine is sent by IPMB bus, routine interface required for receipt message, drive the program circuit of framework, data structure and realization, achieve the transmission of IPMI message.
Can carry intelligence and non intelligent I in the IPMB bus defined in IPMI specification
2c equipment, Fig. 2 shows a simple IPMB bus link model, wherein:
Baseboard management controller (Baseboard Management Controller, BMC) and Management Controller (Management Controller) be smart machine, FRU SEEPROM (electric erasable with serial line interface storing Field Replaceable information becomes ROM (read-only memory)) is unintelligent device, by IPMB Bussing connector (Connector) by I
2c bus to extend in frame on other remote side administration support plate (Remote Management Card), and the IPMI equipment of far-end is likely then smart machine, is also likely unintelligent device.In addition, IPMB bus by the platform management equipment on each outer plug-in card in connector connecting platform, can also set up the intelligent platform management network being distributed in whole platform.
For unintelligent device, as in extrapolation module for depositing Field Replaceable (Field-Replaceable Unit, FRU) Electrically Erasable Read Only Memory (the Electrically Erasable Programmable Read-Only Memory of data, EEPROM), temperature sensor etc., only need to use I
2c bus driver adds that specific device drives can use.
Smart machine mainly refers to the equipment with autonomous processing power, as Module Management Controller (the Module Management Controller in Micro TCA framework, MMC), both sides' two smart machines all need to send and receive IPMI message, and the both sides therefore connected in bus all need the interface driver realizing the reception of IPMB bus, send IPMI message.
Fig. 3 shows the structure of the IPMI message delivery system that the embodiment of the present invention provides, and for ease of illustrating, illustrate only the part relevant to the embodiment of the present invention.
This IPMI message delivery system can be widely used in the computer equipment supporting IPMI related specifications.
IPMI firmware application programs 1 is called IPMB and is driven the interface of 2 to carry out the transmitting-receiving of IPMI message, and IPMB drives the transmitting-receiving of the data of 2 to pass through I
2c bus driver 3 realizes.
I
2c break in service unit 31 receipt message bag, leaves the message bag received in IPMB bus message buffer queue.
IPMB message sink Processing tasks unit 21 obtains message from IPMB bus message buffer queue, if the message obtained is response message, then carries out response message coupling, if the message obtained is request message, then request message is put into the queue of IPMB request message.
IPMB message sink interface 22 reads the message in the queue of IPMB request message.
IPMB message sends and wait acknowledge interface 23 calls IPMB message transmission interface 24 and sends IPMI request message, and obtains corresponding response message from IPMB message sink Processing tasks unit 21.IPMB message transmission interface 24 passes through I by verifying the IPMI message passed through
2the I of C bus driver 3
2c r/w cell (I
2c write) 32 to send.
IPMI firmware application programs 1 is processed by IPMB message sink interface 22 each reading IPMI request message from the queue of IPMB request message, the response message obtained is sent by IPMB message transmission interface 24.
In addition, IPMI firmware application programs is sent by IPMB message and wait acknowledge interface 23 sends an IPMI request message, and can obtain corresponding response message.
Fig. 4 shows the structure of the IPMB message sink Processing tasks unit that the embodiment of the present invention provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.
Message read module 211 reads message from IPMB bus message buffer queue.
The message check word checksum of message correction verification module 212 verification message bag.
Message judge module 213 judges to verify whether the message passed through is request message according to the network function of message number (net Fn), when for request message, puts it into the queue of IPMB request message.
Response message matching module 214 is when message judge module 213 judges that message is response message, and in wait acknowledge matched linked list, the response matches item of inquiry request response message, sends to the mailbox described in response matches item by response message.
The IPMB message that Fig. 5 shows the embodiment of the present invention to be provided sends and the structure of wait acknowledge interface, for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.
Message mailbox creation module 231 judges whether the message that will send is request message, is, for request message creates a message mailbox.
Response waits for that module 232 description of packing has the response matches item of this message mailbox, and adds wait acknowledge matched linked list.
The response message received from message mailbox copies in return data buffer memory by reply process module 233, deletes this response matches item from wait acknowledge matched linked list.
In embodiments of the present invention, above-mentioned IP MB drives interface can be realized by function, specifically comprises:
IPMB bus interface opens function IpmbIntfOpen ();
IPMB bus interface closes function IpmbIntfClosed ();
IPMB bus interface receiver function IpmbIntfRecv ();
IPMB bus interface sends function IpmbIntfSend ();
IPMB bus interface sends message and the interface function IpmbIntfSendRecv () of wait acknowledge message;
IPMB bus initialization function IpmbInit ().
Fig. 6 shows IPMB and drives and I
2relation between C bus driver and IPMI firmware application programs, part wherein in dotted line is the file system that embedded OS uses, as (SuSE) Linux OS, uCOSII etc. is not used to the operating system of file system, application program directly calls the interface that IPMB drives, and the transmitting-receiving of the data that IPMB drives is eventually through I
2c bus driver realizes.
IPMI firmware application programs reads an IPMI request message by IpmbIntfRecv () interface and processes, and the response message obtained is sent by IpmbIntfSend () interface; In addition, IPMI firmware application programs sends an IPMI request message by IpmbIntfSendRecv () interface, and can obtain corresponding response message.
Intelligent Platform Management Bus agreement (Intelligent Platform Management Bus Communications Protocol Specification v1.0) defines the form of the IPMI message bag between smart machine, as shown in Figure 1.
The embodiment of the present invention is configured with an association (IPMI_MESSAGE) for this data layout and describes IPMB message, and example is as follows:
typedef union
{
struct
{
INT8U rsSA；
INT8U rsLUN:2；
INT8U NetFn:6；
INT8U Checksum1；
INT8U rqSA；
INT8U rqLUN:2；
INT8U rqSeq:6；
INT8U Cmd；
INT8U Data[1]；
}Req；
struct
{
INT8U rqSA；
INT8U rqLUN:2；
INT8U NetFn:6；
INT8U Checksum1；
INT8U rsSA；
INT8U rsLUN:2；
INT8U rqSeq:6；
INT8U Cmd；
INT8U CCode；
INT8U Data[1]；
}Rsp；
}IPMI_MESSAGE；
For the data field (data bytes) in request and response data, the array of a definition byte.The message bag that the pointed of a configuration IPMI_MESSAGE type receives in the process used.
Because the data length of reality is longer than the data length configured in the embodiment of the present invention, so the subscript being greater than 0 can be used to read Data [].Due to the data length unfixing (the longest 2 bytes) of IPMB bus protocol definition, and I
2c bus can get the length of data when reception one section of message bag, so IPMB drives the message packet format transmitted between modules to be configured to following form by the embodiment of the present invention, like this by providing data length, facilitate down-stream to realize:
typedef struct
{
INT8U Len；
INT8U Data[2]；//IPMI Message
}MSG_Q_MSG；
Fig. 7 show IPMB drive in each interface function and inside IPMB message handling task between co-operating hierarchical relationship, and between data flow, wherein, single arrow represents input traffic, and broad arrow represents output stream, the I in figure
2c bus driver part operates in master slave mode, and I2cInterruptServicer () is I
2c bus break in service function, IpmbintfTask () is IPMB message sink Processing tasks function.
IPMI firmware application programs is called IpmbIntfSendRecv () function and is outwards sent a request message, and request message is passed through I by this function call IpmbIntfSend () function
2c bus driver sends, and sets up a response matches item and be linked in wait acknowledge matched linked list, and its data structure example is as follows:
typedef struct
{
LIST_ENTRY Link；
INT8U rsSA；
INT8U rsLUN:2；
INT8U NetFn:6；
INT8U rqLUN:2；
INT8U rqSeq:6；
INT8U Cmd；
INT8U Timeout；
OS_EVENT *MBox；
}MMC_RSP_MATCH_ENTRY；
I
2c bus break in service function I2cInterruptServicer () receives (I after a message bag
2c judges the beginning of a message bag with start signal, judges the end of a message bag with end signal), left in IPMB bus message buffer queue.
As shown in Figure 8, details are as follows for specific implementation flow process:
In step S801, close and interrupt;
In step S802, receive data;
In step S803, judge whether data arrive termination condition, are, perform step S804, otherwise return execution step S802;
In step S804, message bag is left in IPMB bus message buffer queue;
In step S805, opens interrupters.
IPMB message sink Processing tasks function IpmbIntfTask () obtains message bag from IPMB bus message buffer queue, odd even according to the network function number (net Fn) of message differentiates request message or response message, if odd number, carry out response message coupling, if there is the request message of coupling to wait for (namely have task calling IpmbIntfSendRecv () and send request message wait acknowledge), then this response message is sent to corresponding mailbox, sending a request message like this of task just can return corresponding response message by IpmbIntfSendRecv () function, if even number then puts this request message the queue of into IPMB request message.
As shown in Figure 9, details are as follows for specific implementation flow process:
In step S901, from IPMB bus message buffer queue, read a piece of news;
In step S902, judge whether IPMB bus message buffer queue is empty, is return and perform step S901, otherwise performs step S903;
In step S903, the message check word checksum of verification message bag;
In step S904, judge whether verification is passed through, and is perform step S904, otherwise return execution step S901;
In step S905, judge whether message is request message Request, is perform step S906, otherwise perform step S907;
In step S906, request message is put into the queue of IPMB request message;
In step s 907, match query item in wait acknowledge matched linked list;
In step S908, judge whether to find occurrence, be, perform step S909, otherwise return execution step S901.
In step S909, response message is sent to the mailbox described in occurrence.
IPMI application layer reads message by IpmbIntfRecv () function, after IPMI application layer carries out request message process, produces response message, directly calls IpmbIntfSend () function and send.
IPMI application layer sends a request message by IpmbIntfSendRecv () function, and obtains corresponding response message.
IpmbIntfSendRecv () function first will judge whether will send message is a request message, if, then for it creates a message mailbox, and be linked in wait acknowledge matched linked list according to an above-mentioned data structure occurrence of packing, call IpmbIntfSend () function message is sent, after completing, wait mailbox receives return messages, response message can obtain from this mailbox, just delete the node just added in this mailbox and wait acknowledge matched linked list afterwards, return response message.
As shown in Figure 10, details are as follows for specific implementation flow process:
In step S1001, judge whether the message that will send is request message;
In step S1002, for request message creates a message mailbox;
In the step s 1003, a response matches item of packing, and add wait acknowledge matched linked list;
In step S1004, call IpmbIntfSend () function and send a request message;
In step S1005, time-out time is set, waits for that mailbox returns;
In step S1006, judge that whether mailbox returns correct, is perform step S1007, otherwise performs step S1008;
In step S1007, the response message received is copied in return data buffer memory;
In step S1008, from wait acknowledge matched linked list, delete response matches item.
IpmbIntfRevc () mainly realizes the reading of request message queue, and IpmbIntfSend () is sent verifying the message bag passed through by I2cWrite (), I
2c bus driver does not belong to the scope of IPMB bus protocol definition, repeats no more.
Embodiments provide concrete structure and the flow process of IPMB bus driver, achieve the transmission of IPMI message, thus achieve Intelligent Platform Management Bus agreement, the establishment for IPMI intelligent platform management network provides to connect and ensures.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. an IPMI massage transmission device, is characterized in that, described device comprises:
IPMB message sink Processing tasks unit, for obtaining message from IPMB bus message buffer queue, if the message obtained is response message, then match query item in wait acknowledge matched linked list, response message is sent to the mailbox described in occurrence, if the message obtained is request message, then request message is put into the queue of IPMB request message;
IPMB message sink interface, for reading the message in the queue of described IPMB request message;
IPMB message transmission interface, for passing through I by verifying the IPMI message passed through
2c bus driver sends; And
IPMB message sends and wait acknowledge interface, a message mailbox is created for the IPMI request message for sending, be packaged into a response matches item, and described response matches item is added in wait acknowledge matched linked list, call described IPMB message transmission interface and send IPMI request message, and obtain the response message of the correspondence acquired by described IPMB message sink Processing tasks unit.
2. device as claimed in claim 1, it is characterized in that, described IPMB message sink Processing tasks unit comprises:
Message read module, for reading message from described IPMB bus message buffer queue;
Message correction verification module, for the message check word of verification message bag;
For judging according to the network function number of message, message judge module, verifies whether the message passed through is request message, when described message is request message, described request message is put into the queue of described IPMB request message;
Response message matching module, for when described message judge module judges that message is response message, the response matches item of inquiry request response message in wait acknowledge matched linked list, sends to the mailbox described in described response matches item by response message.
3. device as claimed in claim 1, is characterized in that, described IPMB message sends and wait acknowledge interface comprises:
Message mailbox creation module, judges whether the message that will send is request message, is be then described request message establishing message mailbox;
Module is waited in response, has the response matches item of described message mailbox, and add wait acknowledge matched linked list for a description of packing;
Reply process module, for the response message received from described message mailbox being copied in return data buffer memory, deletes described response matches item from wait acknowledge matched linked list.
4. device as claimed in claim 1, it is characterized in that, described IPMB message is the association meeting IPMI message packet format.
5. device as claimed in claim 1, is characterized in that, described IPMB drives the length information being configured with data in the message bag transmitted between interface.
6. an IPMI message delivery system, is characterized in that, described system comprises I
2c bus driver and IPMB drive, and IPMI firmware application programs calls described I
2the interface of C bus driver carries out IPMI information receiving and transmitting, and the data transmit-receive that described IPMB drives is by described I
2c bus driver realizes;
Described IPMB drives and comprises:
IPMB message sink Processing tasks unit, for obtaining message from IPMB bus message buffer queue, if the message obtained is response message, then match query item in wait acknowledge matched linked list, response message is sent to the mailbox described in occurrence, if the message obtained is request message, then request message is put into the queue of IPMB request message;
IPMB message sink interface, for reading the message in the queue of described IPMB request message;
IPMB message transmission interface, for passing through described I by verifying the IPMI message passed through
2c bus driver sends; And
IPMB message sends and wait acknowledge interface, a message mailbox is created for the IPMI request message for sending, be packaged into a response matches item, and described response matches item is added in wait acknowledge matched linked list, call described IPMB message transmission interface and send IPMI request message, and obtain the response message of the correspondence acquired by described IPMB message sink Processing tasks unit.
7. system as claimed in claim 6, it is characterized in that, described IPMB message sink Processing tasks unit comprises:
Message read module, for reading message from described IPMB bus message buffer queue;
Message correction verification module, for the message check word of verification message bag;
For judging according to the network function number of message, message judge module, verifies whether the message passed through is request message, when described message is request message, described request message is put into the queue of described IPMB request message;
Response message matching module, for when described message judge module judges that message is response message, the response matches item of inquiry request response message in wait acknowledge matched linked list, sends to the mailbox described in described response matches item by response message.
8. system as claimed in claim 6, is characterized in that, described IPMB message sends and wait acknowledge interface comprises:
Message mailbox creation module, judges whether the message that will send is request message, is be then described request message establishing message mailbox;
Module is waited in response, has the response matches item of described message mailbox, and add wait acknowledge matched linked list for a description of packing;
Reply process module, for the response message received from described message mailbox being copied in return data buffer memory, deletes described response matches item from wait acknowledge matched linked list.
9. system as claimed in claim 6, is characterized in that, described I
2c bus driver comprises:
I
2c break in service unit, for receipt message bag, is stored in IPMB bus message buffer queue by the message bag received.
10. system as claimed in claim 6, it is characterized in that, described IPMB message is the association meeting IPMI message packet format.
11. systems as claimed in claim 6, is characterized in that, described IPMB drives the length information being configured with data in the message bag transmitted between interface.
12. 1 kinds of computer equipments comprising the IPMI message delivery system of the arbitrary claim of claim 6 to 11.
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| CN106341295B (en) * | 2015-07-07 | 2020-12-22 | 中兴通讯股份有限公司 | Communication method and device of intelligent platform management interface equipment and communication equipment |
| CN109032978A (en) * | 2018-05-31 | 2018-12-18 | 郑州云海信息技术有限公司 | A kind of document transmission method based on BMC, device, equipment and medium |
| CN109032979A (en) * | 2018-06-04 | 2018-12-18 | 郑州云海信息技术有限公司 | Document transmission method, device, equipment and storage medium between a kind of BMC |
| CN112463365B (en) * | 2020-11-13 | 2023-01-10 | 苏州浪潮智能科技有限公司 | Method and device for improving message processing efficiency of Flash channel controller |
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