CN106126454B9 - Computer system, and access method and device of high-speed peripheral component interconnection endpoint equipment - Google Patents

Computer system, and access method and device of high-speed peripheral component interconnection endpoint equipment Download PDF

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Publication number
CN106126454B9
CN106126454B9 CN201610474435.9A CN201610474435A CN106126454B9 CN 106126454 B9 CN106126454 B9 CN 106126454B9 CN 201610474435 A CN201610474435 A CN 201610474435A CN 106126454 B9 CN106126454 B9 CN 106126454B9
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access request
equipment
pcie endpoint
response message
analog response
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CN106126454B (en
CN106126454A (en
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葛小宇
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority claimed from CN201380002624.0A external-priority patent/CN103797469B/en
Publication of CN106126454A publication Critical patent/CN106126454A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4204—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus
    • G06F13/4221—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0024—Peripheral component interconnect [PCI]

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)

Abstract

The embodiment of the invention relates to an access method, a computer system and a device for high-speed peripheral component interconnected endpoint equipment, which are used for monitoring the message state of an access request sent by a processor and sending a simulation response message of the access request to the processor when PCIe endpoint equipment is determined not to send a response message of the access request, so that the processor can confirm that the flow corresponding to the previously sent access request is completed according to the simulation response message, thereby closing a timer for timing the access request, clearing the cached access request, keeping the normal processing in the processor, and avoiding the MCE reset problem caused by the accumulation of the access request in the processor.

Description

The access method and device of a kind of computer system, high speed peripheral component interconnection endpoint device
Technical field
The present embodiments relate to computer technology, especially a kind of high speed peripheral component interconnection endpoint device Access method, computer system and device.
Background technique
High speed peripheral component interconnects (Peripheral Component Interconnect Express, PCIe) Abbreviation, be for calculate and communications platform on high-performance system bus.PCIe bus is widely used In the interconnection system of CPU and peripheral equipment, core business channel is used as in equipment calculating and storing.It is logical Cross PCIe bus and CPU interconnection peripheral equipment can there are many, such as network card equipment or solid state hard disk (Solid State Disk, SSD) etc., is referred to as PCIe endpoint 1590 equipment for such equipment in this document.
PCIe bus is widely used as the bus interface of server or storage system, when system operates normally, Due to the demand of on-line rapid estimation and maintenance, needs to increase in case of constant power or remove PCIe endpoint 1590 and set It is standby, i.e. the demand of hot plug.Existing PCIe hot plug follows following operating process: operator is by pressing Button initiates hot drawing request, after hot-swapping controller learns hot plug events, all possibility in notice system The driving for accessing the PCIe endpoint 1590 equipment stops accessing the PCIe endpoint 1590 equipment, and will need to carry out hot plug The resource of PCIe endpoint 1590 equipment uninstall, hereafter, to electric under the PCIe endpoint 1590 equipment, operator extracts should PCIe endpoint 1590 equipment.
Existing PCIe endpoint 1590 equipment hot swap needs, which are prenoticed, just can guarantee that system operates normally.However, In recent years, PCIe bus is gradually by interconnection of the interconnection development between system in system, the application such as External cable Increase, cable is easy exception and falls off, and the offline situation of the PCIe endpoint 1590 unit exception that do not prenotice occurs. In addition, user is more and more extensive using the scene that solid-state hard disk SSD is directly accessed to the system, due to user's habit Factor, the possible without previous notice of user just directly plug SSD disk.However, for PCIe endpoint 1590 mentioned above The unexpected abnormal offline situation of equipment, if CPU has initiated to refer to the read-write of this PCIe endpoint 1590 equipment It enables, relevant instruction will always be in state to be done, when CPU is to the access instruction of the PCIe endpoint 1590 equipment Persistent accumulation reaches a certain level, and CPU just will be considered that whole system exception, and it is abnormal to quote machine detection (Machine check exception, MCE) mistake, and resetted.
Summary of the invention
The embodiment of the present invention proposes a kind of access method of high speed peripheral component interconnection endpoint device, computer System and device guarantee that CPU will not generate reset after PCIe endpoint 1590 unit exception is offline.
In a first aspect, the embodiment of the present invention proposes a kind of computer system, the computer system includes:
Processor；
High speed peripheral component interconnects PCIe bus, for connecting PCIe endpoint 1590 equipment；
The processor is for obtaining the operational order to access to the PCIe endpoint 1590 equipment, according to described Operational order, Xiang Suoshu PCIe endpoint 1590 equipment send access request；
The computer system further includes analog response module, in the processor to the PCIe endpoint 1590 After equipment sends the access request, the message status of the access request is monitored, preset When trigger condition reaches, the message status of the access request is determined, if the message shape of the access request State is " unfinished ", then obtains the analog response message of the access request, and send institute to the processor State analog response message；
Wherein, the message status of the access request includes " being completed " or " unfinished ", described " not complete At " indicate the response message of the not sent access request of PCIe endpoint 1590 equipment.
With reference to first aspect, in the first possible implementation, the analog response module is set to institute It states in processor and the signal transmission path of the PCIe endpoint 1590 equipment, is specifically used for receiving the processor hair The access request sent, access request described in Xiang Suoshu PCIe endpoint 1590 device forwards, monitors whether itself receives The response message for the access request that the PCIe endpoint 1590 equipment is sent, if receiving the PCIe endpoint 1590 The response message for the access request that equipment is sent, the message status of the access request is recorded as " It completes ".
With reference to first aspect or the first possible implementation of first aspect, in second of possible reality In existing mode, the computer system further include: PCIe exchanger, for multiple PCIe endpoint 1590s to be set Standby to be connected to the processor, the downstream port of the PCIe exchanger passes through the PCIe bus and multiple institutes State the connection of PCIe endpoint 1590 equipment；
The upstream that a port of the analog response module passes through the PCIe bus and the PCIe exchanger Port connection, another port of the analog response module is connected to the processor.
With reference to first aspect or the first possible implementation of first aspect or first aspect second The possible implementation of kind, in the third possible implementation, the analog response of the access request disappears Breath includes first kind analog response message or Second Type analog response message, and the first kind simulation is rung Message is answered to indicate that the PCIe endpoint 1590 equipment does not support the access request, the Second Type analog response to disappear Breath indicates the PCIe endpoint 1590 unit exception；
The processor is also used to be rung according to the first kind analog response message or Second Type simulation Message is answered, the subsequent access to the PCIe endpoint 1590 equipment is stopped.
With reference to first aspect or the first possible implementation of first aspect or first aspect second The possible implementation of kind, in the fourth possible implementation, the preset trigger condition is described PCIe endpoint 1590 equipment is abnormal offline；
Correspondingly, the analog response module be also used to monitor the PCIe endpoint 1590 equipment whether be abnormal from Line determines the message status of the access request when determining that the PCIe endpoint 1590 equipment is abnormal offline.
With reference to first aspect or the first possible implementation of first aspect or first aspect second The possible implementation of kind, in a fifth possible implementation, the preset trigger condition is described The timer expired of access request；
Correspondingly, the analog response module is also used to open for the access request that the processor is sent Dynamic timer carries out timing and determines the message status of the access request after the timer expired.
Second aspect, it is also proposed that a kind of access method of high speed peripheral component interconnection PCIe endpoint 1590 equipment, PCIe Endpoint device is accessed in computer system by PCIe bus, which comprises
It is right after the processor in the computer system sends access request to the PCIe endpoint 1590 equipment The message status of the access request is monitored, wherein the message status of the access request includes " Complete " or " unfinished ", " unfinished " the expression not sent access of PCIe endpoint 1590 equipment The response message of request；
When preset trigger condition reaches, the message status of the access request is determined；
If the message status of the access request is " unfinished ", the analog response of the access request is obtained Message；
The analog response message of the access request is sent to the processor.
In conjunction with second aspect, in the first possible implementation, the method also includes:
Receive the access request that the processor is sent, access request described in Xiang Suoshu PCIe endpoint 1590 device forwards；
Then, the message status to the access request, which is monitored, includes:
The response message for itself whether receiving the access request that the PCIe endpoint 1590 equipment is sent is monitored, If the response message for the access request that the PCIe endpoint 1590 equipment is sent is received, by the access request Message status be recorded as " being completed ".
In conjunction with the possible implementation of the first of second aspect or second aspect, in second of possible reality In existing mode, the preset trigger condition is that the PCIe endpoint 1590 equipment is abnormal offline；
The method also includes:
It monitors whether the PCIe endpoint 1590 equipment is abnormal offline, is determining the PCIe endpoint 1590 equipment hair When raw abnormal offline, the step of executing the message status of the determination access request.
In conjunction with the possible implementation of the first of second aspect or second aspect, in the third possible reality In existing mode, the preset trigger condition is the timer expired of the access request；
The method also includes:
Timing is carried out for the access request starting timer that the processor is sent, in the timer After time-out, the step of executing the message status of the determination access request.
The third aspect proposes a kind of analog response device, is applied in computer system, high-speed peripheral group Part interconnects PCIe endpoint 1590 equipment and is accessed in the computer system by PCIe bus, and described device includes:
Monitoring unit sends to the PCIe endpoint 1590 equipment for the processor in the computer system and visits After asking request, the message status of the access request is monitored, wherein the report of the access request Literary state includes " being completed " or " unfinished ", " unfinished " the expression PCIe endpoint 1590 equipment The response message of the not sent access request；
Determination unit, for when preset trigger condition reaches, according to the monitored results of the monitoring unit Determine the message status of the access request；
Acquiring unit, for determining that the message status of the access request is " unfinished " in the determination unit When, obtain the analog response message of the access request；
Response unit, for sending the analog response message that the acquiring unit obtains to the processor.
In conjunction with the first possible implementation of the third aspect, in the second possible implementation, also Including interactive unit, the access request sent for receiving the processor, Xiang Suoshu PCIe endpoint 1590 equipment turns Send out access request described；
Then the monitoring unit is specifically used for monitoring whether the interactive unit receives the PCIe endpoint 1590 equipment The response message of the access request sent, if receiving the access that the PCIe endpoint 1590 equipment is sent The message status of the access request is recorded as " being completed " by the response message of request.
Fourth aspect proposes a kind of computer, comprising: processor, memory, bus and communication interface；
The memory is for storing computer executed instructions, the processor and the memory described in Bus connection, when computer operation, the processor executes the calculating of the memory storage Machine executes instruction, so that the computer executes a kind of high speed peripheral component interconnection PCIe described in second aspect The access method of endpoint device.
5th aspect, proposes a kind of computer-readable medium, including computer executed instructions, works as computer Processor when executing the computer executed instructions, the computer executes a kind of high described in second aspect The access method of fast peripheral assembly interconnection PCIe endpoint 1590 equipment.
In the embodiment of the present invention, since the message status for the access request that can be sent to processor is monitored, And when determining the not sent response message to the access request of PCIe endpoint 1590 equipment, sends and visit to processor The analog response message for asking request enables a processor to be issued before confirmation according to the analog response message The corresponding process of access request completed, thus close to the access request carry out timing timer, And the access request of caching is removed, it keeps the processing inside processor to be normally carried out, avoids access request Caused MCE reset issues are accumulated in processor.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to the prior art or embodiment Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only this Some embodiments of invention, for those of ordinary skill in the art, before not making the creative labor It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of composition figure of the computer system provided according to embodiments of the present invention；
Fig. 2 is the composition figure of another computer system provided according to embodiments of the present invention；
Fig. 3 is a kind of method flow diagram provided according to embodiments of the present invention；
Fig. 4 is another method flow diagram provided according to embodiments of the present invention；
Fig. 5 is another method flow diagram provided according to embodiments of the present invention；
Fig. 6 is a kind of composition figure of the analog response device provided according to embodiments of the present invention；
Fig. 7 is the composition figure of another the analog response device provided according to embodiments of the present invention；
Fig. 8 is a kind of composition figure of the computer provided according to embodiments of the present invention.
Specific embodiment
The embodiment of the present invention proposes a kind of access method of high speed peripheral component interconnection endpoint device, computer System and device can not have to advance notification system when there is PCIe endpoint 1590 equipment to need to carry out hot plug operations It is pre-processed, just the connection directly between disconnection PCIe endpoint 1590 equipment and processor, processor is not yet at this time The risk of MCE reset can be generated.
PCIe endpoint 1590 equipment is directly extracted system or the case where the going offline system that breaks down by the embodiment of the present invention Referred to as PCIe endpoint 1590 equipment is abnormal offline.
The system architecture of the embodiment of the present invention
Fig. 1 depicts the composition figure of computer system provided in an embodiment of the present invention, computer shown in FIG. 1 It include CPU 110 and memory 120 in system, PCIe endpoint 1590 equipment 130 is connected by PCIe bus 140 To CPU110, and can be plugged away from the computer system.PCIe endpoint 1590 equipment 130 includes multiple types Type, such as graphics processing unit 131, network adapter 132, solid state hard disk 133 and video acceleration component 134.
PCIe endpoint 1590 equipment 130 and CPU110 in computer system shown in FIG. 1 form a domain PCIe, All devices in the domain PCIe connect with CPU 110 by PCIe bus 140 and receive CPU110's Control.
After CPU110 gets the operational order to access to PCIe endpoint 1590 equipment 130, CPU110 root According to operational order, access request is issued to PCIe endpoint 1590 equipment 130, it is desirable that PCIe endpoint 1590 equipment 130 Register carry out read operation or write operation, if PCIe endpoint 1590 equipment 130 is abnormal offline, CPU110 PCIe endpoint 1590 equipment 130 will not received to the response message of the access request of CPU110, at this point, CPU is just It will be considered that the access request belongs to unfinished task, if such unfinished task runs up to one in CPU Determine degree, CPU just will be considered that whole system exception, quote MCE mistake and be resetted.
The embodiment of the present invention increases analog response module 160 newly in systems, which is used for After the CPU110 sends the access request to the PCIe endpoint 1590 equipment 130, CPU110 is sent The message status of the access request be monitored, it is described if preset trigger condition reaches The message status of access request is still " unfinished ", i.e., the described PCIe endpoint 1590 equipment 130 is not sent to institute The response message of access request is stated, which just obtains the analog response of the access request Message, and the analog response message is sent to CPU110.Due to the analog response message and the access Heading having the same is requested, the access request and the analog response message in correspondence with each other, can make It obtains CPU and thinks that the corresponding process of access request of its sending previous has been completed, to close to the access Request carries out the timer of timing, and removes the access request of CPU own cache.
Wherein, the message status of the access request includes " being completed " or " unfinished ", " being completed " Indicate that the PCIe endpoint 1590 equipment has sent the response message of the access request, " unfinished " expression institute State the response message of the not sent access request of PCIe endpoint 1590 equipment.
In addition, the analog response module 160 is also used to send out in the processor to the PCIe endpoint 1590 equipment After sending the access request, the analog response message of the access request is just generated, and caches the access The analog response message of request, the subsequent access for directly acquiring own cache of the analog response module 160 The analog response message of request.
In the embodiment of the present invention, since analog response module can be to the report of the CPU access request sent Literary state is monitored, and when determining the not sent response message to the access request of PCIe endpoint 1590 equipment, The analog response message that access request is sent to CPU, enables CPU according to the analog response message, really The corresponding process of access request issued before recognizing has been completed, and carries out timing to the access request to close Timer, and remove the access request of caching, keep the processing inside CPU to be normally carried out, avoid Access request accumulates caused MCE reset issues in CPU.
In a kind of specific embodiment of the present invention, message of the analog response module 160 to the access request State is monitored, can be by monitoring the institute for itself whether receiving the PCIe endpoint 1590 equipment 130 and sending The response message of access request is stated to realize, if the analog response module receives the PCIe endpoint 1590 equipment The response message of the access request sent, analog response module remember the message status of the access request Record is " being completed ".
In one particular embodiment of the present invention, analog response module 160 can be arranged in CPU110 and In transmission path between each PCIe endpoint 1590 equipment 130, guarantee CPU110 and each PCIe endpoint 1590 equipment Message between 130 is required by analog response module 160, so that analog response module 160 can pass through The response message for monitoring the access request for itself whether receiving the transmission of PCIe endpoint 1590 equipment 130 comes It monitors the message status of the access request, in another implementation, can also be set in advance in PCIe endpoint 1590 It is configured on standby 130, so that PCIe endpoint 1590 equipment 130 sends the sound of the access request to CPU110 When answering message, the response message also is sent to analog response module, in this way it is also ensured that analog response Module 160 monitors the access request according to the response message of the access request itself whether is received Message status.Certainly, the implementation that those skilled in the art can also provide according to embodiments of the present invention, Realize analog response module 160 to the access request using other equivalent or similar implementations Message status is monitored.
As shown in Figure 1, analog response module 160 is arranged on CPU110 and each PCIe endpoint 1590 equipment 130 Between signal transmission path in, in this way, CPU110 issue access request need through analog response module 160 get to PCIe endpoint 1590 equipment 130, therefore analog response module 160 can receive access request, Also, since the message that PCIe endpoint 1590 equipment is sent needs to get to by analog response module 160 CPU110, therefore whether analog response module 160 can receive the hair of PCIe endpoint 1590 equipment 130 according to itself The response message to the access request sent, determines whether PCIe endpoint 1590 equipment 130 sends the access request Response message, and record the message status of the access request.Further, in the embodiment of the present invention In another specific implementation, when analog response module 160 receive CPU110 transmission access request it Afterwards, the access request can also be cached, if the access that subsequently received PCIe endpoint 1590 equipment 130 is sent is asked The access request of caching can be stamped " being completed " by the response message asked, analog response module 160 Label, or the access request of caching is deleted, analog response module 160 is reached in preset trigger condition When, the message status of the access request, the i.e. label of the access request of query caching or inquiry can be inquired The access request of caching, if the label of the access request indicates the access request " unfinished " or caching Access request be not deleted, analog response module 160 determines that the message status of the access request is " not Complete ", i.e. the response message of the not sent access request of the PCIe endpoint 1590 equipment 130, then analog response Module 160 obtains the analog response message of the access request, and sends the analog response message to CPU110.
Wherein, analog response module 160 can be mentioned when receiving the access request of CPU110 transmission Previous existence at the analog response message of the access request, and the analog response of the access request of generation is disappeared Breath is associated caching with the access request, and subsequent analog response module 160 directly acquires the described of caching The analog response message of access request.Certainly, analog response module 160 can also not received in determination When the response message of the access request sent to PCIe endpoint 1590 equipment 130, the mould of the access request is just generated Quasi- response message, the embodiment of the present invention to specific implementation form without limitation.
As shown in Fig. 2, PCIe exchanger can be passed through if there are multiple PCIe endpoint 1590 equipment in system 150 realize the connection of multiple PCIe endpoint 1590 equipment 130 and CPU110, in addition to Fig. 1 in system shown in Fig. 2 Shown in except each component, further include PCIe exchanger 150,150 upstream port of PCIe exchanger It is connect by PCIe bus 140 with CPU110, downstream port provides one towards each PCIe endpoint 1590 equipment PCIe port, each PCIe port are connected to each PCIe endpoint 1590 equipment by PCIe bus 140, Data for being downstream routed to corresponding PCIe port by PCIe exchanger 150, and from each independent PCIe port is by data upstream by CPU110.In Fig. 2, analog response module 160 be can be set In signal transmission path between CPU110 and PCIe exchanger 150, for receiving CPU110 sending Access request, and the CPU110 access request issued is cached, Xiang Suoshu PCIe endpoint 1590 equipment 130 The access request is forwarded, the message status of the access request is monitored, however, it is determined that itself is received The response message for the access request that the PCIe endpoint 1590 equipment 130 is sent, by the visit of own cache It asks that the label of " being completed " is stamped in request, or deletes the access request of own cache, preset When trigger condition reaches, the label of the access request of query caching or the access request of caching, if the visit It asks that the label of request indicates that the access request " unfinished " or the access request of caching are not deleted, simulates Respond module 160 is the response message for determining the not sent access request of PCIe endpoint 1590 equipment 130, then obtains The analog response message of the access request, and the analog response message is sent to CPU110.
In the above-described embodiments, above-mentioned preset trigger condition can be analog response module 160 and determine PCIe Endpoint device 130 is abnormal offline, and in such cases, analog response module 160 is also used to monitor described Whether PCIe endpoint 1590 equipment is abnormal offline, in Fig. 1 and embodiment shown in Fig. 2, analog response module 160 Abnormal offline notification (such as the PCIe endpoint 1590 equipment for itself whether receiving PCIe endpoint 1590 equipment 130 determined It is pulled out the interrupt notification of system), institute is determined according to the abnormal offline notification of the PCIe endpoint 1590 equipment 130 PCIe endpoint 1590 equipment 130 is stated to be abnormal offline.Above-mentioned preset trigger condition can also be that the access is asked The timer expired asked, in such cases, analog response module 160 are also used to for PCIe endpoint 1590 equipment 130 Whether the access request starting timer of transmission determines PCIe endpoint 1590 equipment 130 after the timer expired Send the response message to access request, in Fig. 1 and embodiment shown in Fig. 2, analog response module 160 After receiving the access request of CPU110 transmission and caching the access request, i.e., start for the access request Timer.
The embodiment of the present invention, analog response module are being preset by the monitoring of the message status to access request Trigger condition when reaching, if the message status of access request remains as " unfinished " state, simulation is rung Answer module that the analog response message for the access request that simulation generates just is sent to CPU, so that CPU is not continued to Whether the corresponding process of the access request is completed to carry out timing, and removes the access request of own cache, The normal operation for keeping CPU inter-process avoids CPU access request time-out and does not complete caused MCE Reset issues.
In the above embodiments, analog response module 160 is rung to the simulation of the CPU110 access request sent Answering message may include first kind analog response message or Second Type analog response message, the first kind Pattern intends response message and indicates that the PCIe endpoint 1590 equipment 130 does not support the access request, second class Pattern intends response message and indicates that the PCIe endpoint 1590 equipment 130 is abnormal, and the CPU110 receives access and asks After the analog response message asked, it is also used to according to the first kind analog response message or second class Pattern intends response message, determines that the access to the PCIe endpoint 1590 equipment 130 fails, and do not restart accordingly Access the operation of the reading of data.Due to further specifying the type of analog response message in the present embodiment, While so that CPU is completed according to this browsing process of analog response message authentication, additionally it is possible to confirm this It accesses and non-once successfully accesses, and do not go to execute the behaviour to the next step of this access associated data accordingly Make (such as read operation), therefore the embodiment of the present invention is in the case where PCIe endpoint 1590 unit exception is offline While maintaining CPU normal process flow, it is thus also avoided that CPU goes to execute some unnecessary operations, thus Avoid the waste of system resource.
In yet another embodiment of the present invention, the CPU110 can for accessed PCIe endpoint 1590 equipment The specific more than one access request of energy, such as a plurality of access request is sent, in such cases, analog response mould Block 160 can all be monitored every message status of the CPU a plurality of access request sent, Such as each of a plurality of access request is cached, the sound of each access request whether is received to itself It answers message to be monitored, when preset trigger condition reaches, the access for being not received by response message is asked The quantity asked is counted, and obtaining message status in a plurality of access request is that the access of " unfinished " is asked The quantity asked obtains the analog response message of the access request if the quantity is more than the first threshold value, And the analog response message is sent to the processor.In the present embodiment, as long as not there is an access The response message being not received by is requested, CPU will generate MCE reset, and actually CPU has certain appearance The amount of bearing can just generate only after the access request quantity of not returning response message is accumulated to certain numerical value MCE resets, and therefore, the first threshold value is arranged in the present embodiment, and the access for being only not received by response message is asked When quantity being asked to be more than this first threshold value, analog response message is sent to CPU by 160 ability of analog response module, It is resetted to avoid the MCE of CPU.
Above-mentioned analog response module 160 can be realized by way of software or hardware, provide in the present invention A kind of embodiment in, FPGA (Field-Programmable Gate Array) can be used, i.e., it is live Programmable gate array is realized.
CPU110 described in Fig. 1 and Fig. 2 is also a kind of example, such as can also be specific integrated circuit, Regardless of any form realizes the function of processor in computer systems.Described in the embodiment of the present invention Computer system, can be calculation type server, be also possible to the server of management routing, such as exchange Machine, the present invention to the specific implementation form of computer system without limitation.
The browsing process of PCIe endpoint 1590 equipment
The browsing process embodiment of PCIe endpoint 1590 equipment is introduced below, as shown in figure 3, for the present invention The process to access to PCIe endpoint 1590 equipment that embodiment provides, the PCIe endpoint 1590 equipment are total by PCIe Line accesses computer system, comprising:
S301: after the CPU in the computer system sends access request to PCIe endpoint 1590 equipment, mould Quasi- respond module is monitored the message status of the access request.
Specifically, the message status of the access request includes " being completed " or " unfinished ", " being completed " Indicate that the PCIe endpoint 1590 equipment has sent the response message of the access request, " unfinished " expression institute State the response message of the not sent access request of PCIe endpoint 1590 equipment.
The analog response module is monitored the message status of the access request, can be by monitoring certainly Whether body receives the response message for the access request that the PCIe endpoint 1590 equipment is sent to realize, if institute State the response message that analog response module receives the access request that the PCIe endpoint 1590 equipment is sent, mould The message status of the access request is recorded as " being completed " by quasi- respond module.
Further, the signal transmission path in CPU and PCIe endpoint 1590 equipment can be set in analog response module On, in this way, analog response module can receive the access request from CPU, it also can receive and come from The response message of the access request of PCIe endpoint 1590 equipment, analog response module can be after receiving access request The access request is cached, if the subsequent response message for receiving the access request, by the access of caching The access request that the label of " being completed " is stamped in request or analog response module deletes caching is (such In the case of, the message status of access request is by whether cache access is requested to mark, if cache access is requested, Then indicate that the message status of the access request does not complete, if the access request of caching is deleted, then it represents that the visit Ask that the message status of request is completed).
S302: when preset trigger condition reaches, the analog response module determines that the access is asked The message status asked.
The preset trigger condition can be the timer expired of the access request, be also possible to connect It receives PCIe endpoint 1590 equipment and is abnormal offline notice, embodiment subsequent embodiment will be introduced specifically.
S303: if the message status of the access request is " unfinished ", the analog response module is obtained The analog response message of the access request.
S304: Xiang Suoshu CPU sends the analog response message.
Specifically, the analog response message of the available access request itself generated of analog response module, The analog response message and access request heading having the same, the access request and the mould Quasi- response message in correspondence with each other, can make CPU think the corresponding process of access request of its sending previous Through being completed, to close the timer for carrying out timing to the access request, and CPU own cache is removed The access request maintains the processing inside CPU and is normally carried out, avoids access request and accumulate in CPU The MCE reset issues of caused CPU.
The analog response message of access request in the embodiment of the present invention is not issued by PCIe endpoint 1590 equipment, and The non-true response message of the access request, can be generated, the embodiment of the present invention by other module simulations In the analog response message of the access request can be generated by the analog response module.Analog response module The analog response message of the access request can be pre-generated, it can also be in the message for determining the access request When state is " unfinished ", the analog response message of the access request is temporarily generated.
The embodiment of the present invention, analog response module are being preset by the monitoring of the message status to access request Trigger condition when reaching, if the message status of access request remains as " unfinished " state, simulation is rung Answer module that the analog response message for the access request that simulation generates just is sent to CPU, so that CPU is not continued to Whether the corresponding process of the access request is completed to carry out timing, and removes the access request of own cache, The normal operation for keeping CPU inter-process avoids CPU access request time-out and does not complete caused MCE Reset issues.
In conjunction with above-mentioned computer system embodiment shown in fig. 1 or fig. 2, when analog response module is set to CPU In signal transmission path between PCIe endpoint 1590 equipment, the embodiment of the present invention one specific browsing process is such as Shown in Fig. 4, comprising:
S401: the CPU in computer system obtains operational order, and the operational order indicates described CPU pairs PCIe endpoint 1590 equipment accesses, and the CPU sends access request to the PCIe endpoint 1590 equipment.
Wherein, when upstream endpoint generates the read operation or write operation demand to PCIe endpoint 1590 equipment, the PCIe The drive module of endpoint device receives the calling of upstream endpoint, according to the generation pair of preconfigured access interface The operational order that PCIe endpoint 1590 equipment accesses, CPU obtain the operational order.
S402: the analog response module receives the access request from the CPU, caches the visit Ask request.
The signal transmission path being set to due to the analog response module between CPU and PCIe endpoint 1590 equipment In, the access request from CPU can be received；
S403: the analog response module generates the analog response message of the access request, and by the mould Quasi- response message is associated with caching with the access request.
Analog response module when caching the access request, can give birth in advance in this step 403 At the analog response message of the access request, it can also determine in the next steps and need analog response message When, regenerate the analog response message.
S404: the analog response module is to access request described in the PCIe endpoint 1590 device forwards.
S405: the message status of access request described in the analog response module monitors.
Specifically, whether the analog response module monitors itself receive what the PCIe endpoint 1590 equipment was sent The response message of the access request, if the analog response module receives the PCIe endpoint 1590 equipment and sends The access request response message, analog response module stamps the access request of caching " complete At " label or analog response module delete caching the access request.
The analog response module can after step 404, i.e., it is to described in the PCIe endpoint 1590 device forwards Start the monitoring after access request, can also be after step 401, i.e. CPU is set to the PCIe endpoint 1590 Preparation just starts the monitoring after sending the access request.
S406: the analog response module receives the offline notice of the PCIe endpoint 1590 unit exception, determines The message status of the access request.
In the present embodiment, it is offline that preset trigger condition receives the PCIe endpoint 1590 unit exception Notice.It is arranged in the signal transmission path between CPU and PCIe endpoint 1590 equipment due to analog response module, if PCIe endpoint 1590 equipment is pulled out, and the offline notice of the PCIe endpoint 1590 unit exception transmitted to CPU can be by simulation Respond module, the analog response module receive the offline notice of the PCIe endpoint 1590 unit exception, and determination is set in advance Fixed trigger condition reaches, and inquires the message status of the access request, determines the message status.
S407: if the analog response module determines that the message status of the access request is " unfinished ", institute The analog response message that analog response module obtains the access request of own cache is stated, and to the CPU Send the analog response message.
In the present embodiment, the analog response message can be first kind analog response message, described in instruction PCIe endpoint 1590 equipment 130 does not support the access request, such as the analog response message to carry Unsupported Request (UR) instruction, alternatively, the analog response message can be Second Type simulation Response message indicates that the PCIe endpoint 1590 equipment 130 is abnormal, such as the analog response message carries Completer Abort (CA) instruction.
S408: the CPU receives the analog response message, determines institute according to the analog response message It states the corresponding process of access request to be completed, removes the access request of own cache.
Due to the analog response message and access request heading having the same, access request and mould Quasi- response message corresponds to each other, and CPU can be made to have thought the corresponding process of access request of its sending previous Through being completed, to close the timer for carrying out timing to the access request, and CPU own cache is removed The access request finally maintains the processing inside CPU and is normally carried out, avoids access request in CPU The MCE reset issues of CPU caused by accumulation.
Further, since the analog response message is also possible to carry UR or CA instruction, analog response module The instruction information that can also be further carried according to the analog response message, determination set the PCIe endpoint 1590 Standby access failure, and the error handle that accesses.The access errors processing may include: to inhibit institute CPU is stated to the relevant further operating of the access request (such as reading of data), or by the PCIe The state recording of endpoint device is to be abnormal offline, so that CPU stops to the PCIe endpoint 1590 equipment Carry out subsequent access operation.
S409: the offline notice of the PCIe endpoint 1590 unit exception is transmitted to described by the analog response module CPU。
The subsequent notice that can be offline according to the PCIe endpoint 1590 unit exception of the CPU, by the PCIe The corresponding physical equipment of endpoint device carries out down electrically operated and relevant resource release operations.
In the embodiment of the present invention, analog response module is being connect by the monitoring of the message status to access request When receiving the offline notice of accessed PCIe endpoint 1590 unit exception, if the message status of access request is still For the analog response message hair for the access request that " unfinished " state, analog response module just generate simulation CPU is given, so that whether CPU will not complete the corresponding process of the access request to carry out overtime timing, is kept The normal operation of CPU inter-process, avoid CPU inter access request timed out do not complete caused by MCE it is multiple Position problem.In the embodiment of the present invention, the signal between CPU and PCIe endpoint 1590 equipment is arranged in analog response module In transmission path, the access request that accessed PCIe endpoint 1590 equipment issues whether can be received by itself Response message realize monitoring to access request message status, implement convenient, flexible, efficiency is higher.
In addition, due to further specifying the type of analog response message in the present embodiment so that CPU according to While this browsing process of analog response message authentication is completed, additionally it is possible to confirm this access and non-once Successfully access, and do not go to execute the operation to the next step of this access associated data accordingly and (such as read Operation), therefore maintenance CPU of the embodiment of the present invention in the case where PCIe endpoint 1590 unit exception is offline is normal While process flow, it is thus also avoided that CPU goes to execute some unnecessary operations, to avoid system resource Waste.
Embodiment of the present invention method two, analog response module is still set to the end CPU and PCIe in the present embodiment In signal transmission path between point device, as shown in figure 5, this method comprises:
S501: the CPU in computer system obtains operational order, and the operational order indicates described CPU pairs PCIe endpoint 1590 equipment accesses, and the CPU sends access request to the PCIe endpoint 1590 equipment.
S502: the analog response module receives the access request from the CPU, caches the visit Ask request.
It is arranged in the signal transmission path between CPU and PCIe endpoint 1590 equipment due to the analog response module, It can receive the access request from CPU.
S503: the analog response module starts timer for the access request, and starts timing.
S504: the analog response module generates the analog response message of the access request, and by the mould Quasi- response message is associated with caching with the access request.
Analog response module when caching the access request, can give birth in advance in this step 503 At the analog response message of the access request, it can also determine in the next steps and need analog response message When, regenerate the analog response message.
Above-mentioned steps 503 and step 504 execute no successive point, and analog response module can receive It is started simultaneously at after the access request and executes step 503 and 504,503 can also be first carried out and execute 504 again.
S505: the analog response module is to access request described in the PCIe endpoint 1590 device forwards.
S506: the message status of access request described in the analog response module monitors.
Specifically, whether the analog response module monitors itself receive what the PCIe endpoint 1590 equipment was sent The response message of the access request, if the analog response module receives the PCIe endpoint 1590 equipment and sends The access request response message, analog response module stamps the access request of caching " complete At " label or analog response module delete caching the access request.
S507: the analog response module determines the message of the access request after the timer expired State.
In the present embodiment, preset trigger condition is whether the timer of access request is overtime, the timer Timing time set based on experience value, the empirical value be PCIe endpoint 1590 equipment send access request response disappear The maximum tolerance time of breath, under normal circumstances, if PCIe endpoint 1590 equipment keeps normal, in the empirical value In time, analog response module centainly can receive the response message of the access request of its sending.
S508: if the analog response module determines that the message status of the access request is " unfinished ", institute The analog response message that analog response module obtains the access request of own cache is stated, and to the CPU Send the analog response message.
After timer expired, the message status of access request described in analog response module polls, however, it is determined that institute Stating message status is " unfinished ", then can determine that accessed PCIe endpoint 1590 unit exception is offline substantially, CPU is unlikely to receive the response message of access request, at this point, the access request in order to avoid cpu cache is super When caused MCE reset issues, the analog response message generated in advance is sent to CPU by analog response module.
In the present embodiment, the analog response message can be first kind analog response message, described in instruction PCIe endpoint 1590 equipment 130 does not support the access request, such as the analog response message to carry Unsupported Request (UR) instruction or the analog response message can be Second Type simulation and rings Message is answered, indicates that the PCIe endpoint 1590 equipment 130 is abnormal, such as the analog response message carries Completer Abort (CA) instruction.
S509: the CPU receives the analog response message, determines institute according to the analog response message It states the corresponding process of access request to be completed, removes the access request of own cache.
Due to the analog response message and access request heading having the same, access request and mould Quasi- response message corresponds to each other, and CPU can be made to have thought the corresponding process of access request of its sending previous Through being completed, to close the timer for carrying out timing to the access request, and CPU own cache is removed The access request finally maintains the processing inside CPU and is normally carried out, avoids access request in CPU The MCE reset issues of CPU caused by accumulation.
Further, since the analog response message is also possible to carry UR or CA instruction, analog response module The instruction information that can also be further carried according to the analog response message, access error handle；Institute Stating access errors processing may include: to inhibit the CPU to the relevant further operating (example of the access request Such as the reading of data), or the state recording of the PCIe endpoint 1590 equipment is offline to be abnormal, thus So that CPU stops to carry out subsequent access operation to the PCIe endpoint 1590 equipment.
S510: the analog response module determines the state of the PCIe endpoint 1590 equipment.
The analog response module further determines that the state of the PCIe endpoint 1590 equipment is abnormal offline or hair Raw failure, it is offline if it is the PCIe endpoint 1590 unit exception, step 511 is executed, if it is the PCIe Endpoint device breaks down, and executes step 512.
The analog response module can determine itself whether receive offline logical of PCIe endpoint 1590 unit exception Know, it, can also be to according to whether receiving the notice determines that whether abnormal the PCIe endpoint 1590 equipment is offline PCIe endpoint 1590 equipment sends probe message, the state to the determination PCIe endpoint 1590 equipment.
S511: if the analog response module determines that the PCIe endpoint 1590 unit exception is offline, Xiang Suoshu CPU The offline notice of the PCIe endpoint 1590 unit exception is sent, so that the CPU is according to the PCIe endpoint 1590 The offline notice of unit exception, by the corresponding physical equipment of the PCIe endpoint 1590 equipment carry out down it is electrically operated and Resource release operations.
S512: if the analog response module determines the PCIe endpoint 1590 device fails, described in reparation The failure of PCIe endpoint 1590 equipment.
In the embodiment of the present invention, analog response module is being counted by the monitoring of the message status to access request When device time-out after, if the message status of access request remains as " unfinished " state, analog response module The analog response message for the access request that simulation generates just is sent to CPU, so that CPU will not ask the access It asks whether corresponding process is completed to carry out overtime timing, keeps the normal operation of CPU inter-process, avoid CPU inter access request timed out does not complete caused MCE reset issues.
In addition, due to further specifying the type of analog response message in the present embodiment so that CPU according to While this browsing process of analog response message authentication is completed, additionally it is possible to confirm this access and non-once Successfully access, and do not go to execute the operation to the next step of this access associated data accordingly and (such as read Operation), therefore maintenance CPU of the embodiment of the present invention in the case where PCIe endpoint 1590 unit exception is offline is normal While process flow, it is thus also avoided that CPU goes to execute some unnecessary operations, to avoid system resource Waste.
Apparatus of the present invention embodiment
Analog response device provided in an embodiment of the present invention is applied in computer system, PCIe endpoint 1590 equipment It is accessed in the computer system by PCIe bus, as shown in fig. 6, described device is set with PCIe endpoint 1590 Standby 130 and CPU110 interaction, the device include:
Monitoring unit 601 is sent out for the CPU110 in the computer system to the PCIe endpoint 1590 equipment After sending access request, the message status of the access request is monitored, wherein the access request Message status include " being completed " or " unfinished ", " unfinished " expression PCIe endpoint 1590 The response message of the not sent access request of equipment；
Determination unit 602, for when preset trigger condition reaches, according to the prison of the monitoring unit 601 Control result determines the message status of the access request；
Acquiring unit 603, for determining that the message status of the access request is " not in the determination unit 602 Complete " when, obtain the analog response message of the access request；
Response unit 604, for sending the simulation that the acquiring unit 603 obtains to the CPU110 Response message.
Further, in another Installation practice of the invention, as shown in fig. 7, the device can also be into one Step includes:
Interactive unit 605, the access request sent for receiving the CPU110, Xiang Suoshu PCIe endpoint 1590 are set The standby 130 forwarding access request；
Then the monitoring unit 601 is specifically used for monitoring whether the interactive unit 605 receives the PCIe The response message for the access request that endpoint device is sent, if receiving what the PCIe endpoint 1590 equipment was sent The message status of the access request is recorded as " being completed " by the response message of the access request.
Further, in another Installation practice of the invention, the monitoring unit 601 is also used to cache institute State the access request that interactive unit 605 receives；
The monitoring unit 601 is specifically used for receiving the PCIe endpoint 1590 equipment in the interactive unit 605 It is when the response message of the access request sent, stamping for the access request of the caching is " complete At " label, or delete caching the access request；
The determination unit 602 is specifically used for when preset trigger condition reaches, and inquires the monitoring unit The access request of 601 cachings, if the label of the access request of caching is to be completed " or caching The access request it is deleted, it is determined that the message status of the access request is " being completed ", if The label of the access request of caching be unfinished " or the access request that caches do not have it is " complete At " label, it is determined that the message status of the access request is " unfinished ".
Further, in another Installation practice of the invention, the monitoring unit 601 is also used to, in institute After stating the access request that interactive unit 605 receives the CPU110 transmission, generates the access and ask The analog response message asked, and cache the analog response message of the access request；
Then, the access that the acquiring unit 603 is specifically used for obtaining the caching of monitoring unit 601 is asked The analog response message asked.
Further, in another Installation practice of the invention, the analog response message package of the access request First kind analog response message or Second Type analog response message are included, the first kind analog response disappears Breath indicates that the PCIe endpoint 1590 equipment does not support the access request, the Second Type analog response message to refer to Show the PCIe endpoint 1590 unit exception.
Further, in another Installation practice of the invention, the preset trigger condition is the PCIe Endpoint device is abnormal offline；
The monitoring unit 601 is also used to: monitor the PCIe endpoint 1590 equipment whether be abnormal offline, When determining that the PCIe endpoint 1590 equipment is abnormal offline, the determination unit 602 is notified to execute the determination The step of message status of the access request.
Further, in another Installation practice of the invention, the monitoring unit 601 is specifically used for: really Whether the fixed interactive unit 605 receives the abnormal offline notification of the PCIe endpoint 1590 equipment, if so, Determine that the PCIe endpoint 1590 equipment is abnormal offline.
Further, in another Installation practice of the invention, the interactive unit 605 is also used to:
The abnormal offline notification of the PCIe endpoint 1590 equipment is forwarded to the CPU110, so that the CPU110 According to the abnormal offline notification of the PCIe endpoint 1590 equipment 130 received, by the PCIe endpoint 1590 equipment 130 corresponding physical equipments carry out down electrically operated.
Further, in another Installation practice of the invention, the preset trigger condition is the access The timer expired of request；
The monitoring unit 601 is also used to:
Timing is carried out for the access request starting timer that the CPU110 is sent, in the timer After time-out, the step of notifying the determination unit 602 to execute the message status of the determination access request.
The monitoring unit 601 is also used to:
Determine the state of the PCIe endpoint 1590 equipment, however, it is determined that the state of the PCIe endpoint 1590 equipment is abnormal Offline, then the interactive unit 605 is notified to send the PCIe endpoint 1590 equipment 130 to the CPU110 Abnormal offline notification, so that the CPU110 is according to the different of the PCIe endpoint 1590 equipment 130 received Normal offline notification carries out down the corresponding physical equipment of the PCIe endpoint 1590 equipment 130 electrically operated.
Further, in another Installation practice of the invention, the CPU110 is set to the PCIe endpoint 1590 Standby 130 send a plurality of access request；
The monitoring unit 601 is specifically used for the message shape to every access request of a plurality of access request State is monitored；
The determination unit 602 is specifically used for when preset trigger condition reaches, and counts a plurality of access Whether the quantity for not receiving the access request of response message in request determines the quantity more than the first thresholding Value；
The acquiring unit 603 is specifically used for obtaining the access when the quantity is more than the first threshold value The analog response message of request.
It is the structure composition schematic diagram of computer provided in an embodiment of the present invention such as Fig. 8.The embodiment of the present invention Computer can include:
Processor 801, memory 802, system bus 804 and communication interface 805.Processor 801 is deposited It connects by system bus 804 between reservoir 802 and communication interface 805 and completes mutual communication.
Processor 801 may be single or multiple core central processing unit, perhaps for specific integrated circuit or For the one or more integrated circuits for being configured to implement the embodiment of the present invention.
Memory 802 can be high speed RAM memory, or nonvolatile memory (non-volatile memory), for example, at least a magnetic disk storage.
Memory 802 is used for computer executed instructions 803.Specifically, can be in computer executed instructions 803 Including program code.
When computer operation, processor 801 runs computer executed instructions 803, can execute Fig. 3-Fig. 5 Method flow described in one of any, is specifically not repeated to describe herein.
It will be recognized by those of ordinary skill in the art that the possibility of various aspects of the invention or various aspects is real Existing mode can be embodied as system, method or computer program product.Therefore, of the invention each The possibility implementation of aspect or various aspects can use complete hardware embodiment, complete software embodiment The form of the embodiment of (including firmware, resident software etc.) or integration software and hardware aspect, at this In be all referred to as " circuit ", " module " or " system ".In addition, each aspect of the present invention or each side The possibility implementation in face can use the form of computer program product, and computer program product refers to storage Computer readable program code in computer-readable medium.
Computer-readable medium can be computer-readable signal media or computer readable storage medium.Meter Calculation machine readable storage medium storing program for executing including but not limited to electronics, magnetism, optics, electromagnetism, infrared or semiconductor system, Equipment perhaps device or above-mentioned any appropriately combined, such as random access memory (RAM) read-only are deposited It is reservoir (ROM), Erasable Programmable Read Only Memory EPROM (EPROM or flash memory), optical fiber, portable Read-only memory (CD-ROM).
Processor in computer reads the computer readable program code of storage in computer-readable medium, It enables a processor to execute function action specified in the combination of each step or each step in flow charts； Generate the device for implementing defined function action in each block of the block diagram, or a combination of blocks.
Computer readable program code can execute, on the user's computer completely partially in the calculating of user On machine execute, as individual software package, part on the user's computer and part in remote computer On, or execute on a remote computer or server completely.It is also noted that implementing in certain substitutions In scheme, each piece of function of indicating may not be by indicating in figure in each step or block diagram in flow charts Sequence occurs.For example, depending on related function, two steps or two block reality shown in succession On may be executed substantially concurrently or these blocks may be sometimes performed with reverse order.
Those of ordinary skill in the art may be aware that described in conjunction with the examples disclosed in this document respectively show The unit and algorithm steps of example can be come with the combination of electronic hardware or computer software and electronic hardware It realizes.These functions are implemented in hardware or software actually, the specific application depending on technical solution And design constraint.Professional technician can realize each specific application using distinct methods Described function, but such implementation should not be considered as beyond the scope of the present invention.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited to This, anyone skilled in the art in the technical scope disclosed by the present invention, can readily occur in Change or replacement should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention is answered It is described to be subject to the protection scope in claims.

Claims (33)

1. a kind of computer system, which is characterized in that the computer system includes:
Processor；
High speed peripheral component interconnects PCIe bus, for connecting PCIe endpoint 1590 equipment；
The processor is for obtaining the operational order to access to the PCIe endpoint 1590 equipment, and according to the operational order, Xiang Suoshu PCIe endpoint 1590 equipment sends access request；
The computer system further includes analog response module, for after the processor sends the access request to the PCIe endpoint 1590 equipment, the message status of the access request is monitored, when preset trigger condition reaches, determine the message status of the access request, if the message status of the access request be it is unfinished, obtain the analog response message of the access request, and send the analog response message to the processor；
Wherein, the message status of the access request includes being completed or not completing, the unfinished response message for indicating the not sent access request of PCIe endpoint 1590 equipment；
The simulation corresponding message of the access request includes first kind simulation corresponding message or Second Type simulation corresponding message, the first kind analog response message indicates that the PCIe endpoint 1590 equipment does not support the access request, the Second Type analog response message to indicate the PCIe endpoint 1590 unit exception；
The processor is also used to simulate corresponding message or the Second Type analog response message according to the first kind, stops the subsequent access to the PCIe endpoint 1590 equipment.
2. computer system according to claim 1, it is characterized in that, the analog response module is set in the processor and the signal transmission path of the PCIe endpoint 1590 equipment, the access request sent specifically for receiving the processor, to access request described in the PCIe endpoint 1590 device forwards, the response message for itself whether receiving the access request that the PCIe endpoint 1590 equipment is sent monitored, if receiving the response message for the access request that the PCIe endpoint 1590 equipment is sent, the message status of the access request is recorded as being completed.
3. computer system according to claim 2, it is characterized in that, the computer system further include: PCIe exchanger, for multiple PCIe endpoint 1590 equipment to be connected to the processor, the downstream port of the PCIe exchanger is connect by the PCIe bus with multiple PCIe endpoint 1590 equipment；
The a port of the analog response module is connect by the PCIe bus with the upstream port of the PCIe exchanger, another port of the analog response module is connected to the processor.
4. computer system according to claim 2 or 3, it is characterized in that, the analog response module is also used to after receiving the access request that the processor is sent, cache the access request, if receiving the response message for the access request that the PCIe endpoint 1590 equipment is sent, by the completed label of stamping of the access request of caching, or delete the access request of caching；
Correspondingly, the analog response module is when preset trigger condition reaches, the access request of query caching, if the label of the access request of caching is or the access request of caching is deleted, the message status for then determining the access request is to be completed, if the label of the access request of caching is or label is not completed in the access request of caching, it is determined that the message status of the access request is unfinished.
5. computer system according to claim 2 or 3, it is characterized in that, the analog response module is also used to after receiving the access request that the processor is sent, and generates the analog response message of the access request, and cache the analog response message of the access request；
Correspondingly, the analog response module obtains the analog response message of the access request of own cache when determining the message status of the access request is not complete.
6. computer system according to claim 1-3, which is characterized in that the analog response module is realized using field programmable gate array.
7. -3 described in any item computer systems according to claim 1, which is characterized in that the preset trigger condition is that the PCIe endpoint 1590 equipment is abnormal offline；
Correspondingly, the analog response module is also used to monitor whether the PCIe endpoint 1590 equipment is abnormal offline, when determining that the PCIe endpoint 1590 equipment is abnormal offline, determines the message status of the access request.
8. computer system according to claim 7, which is characterized in that the analog response module is specifically used for the abnormal offline notification for itself whether receiving the PCIe endpoint 1590 equipment determined, if so, determining that the PCIe endpoint 1590 equipment is abnormal offline.
9. computer system according to claim 8, which is characterized in that the analog response module is also used to forward the abnormal offline notification of the PCIe endpoint 1590 equipment to the processor；
The processor is also used to be carried out down the corresponding physical equipment of the PCIe endpoint 1590 equipment electrically operated according to the abnormal offline notification of the PCIe endpoint 1590 equipment received.
10. computer system according to claim 1-3, which is characterized in that the preset trigger condition is the timer expired of the access request；
Correspondingly, the access request starting timer that the analog response module is also used to send for the processor carries out timing and determines the message status of the access request after the timer expired.
11. computer system according to claim 10, it is characterized in that, the analog response module is after sending the analog response message to the processor, it is also used to determine the state of the PCIe endpoint 1590 equipment, if it is determined that the state of the PCIe endpoint 1590 equipment is that exception is offline, then the abnormal offline notification of the PCIe endpoint 1590 equipment is sent to the processor；
The processor is also used to be carried out down the corresponding physical equipment of the PCIe endpoint 1590 equipment electrically operated according to the abnormal offline notification of the PCIe endpoint 1590 equipment received.
12. computer system according to claim 1, which is characterized in that the processor is specifically used for sending a plurality of access request to the PCIe endpoint 1590 equipment；
The analog response module is specifically used for being monitored the message status of every access request of a plurality of access request, when preset trigger condition reaches, count the quantity for not receiving the access request of response message in a plurality of access request, if the quantity is more than the first threshold value, the analog response message of the access request is then obtained, and sends the analog response message to the processor.
13. a kind of access method of high speed peripheral component interconnection PCIe endpoint 1590 equipment, which is characterized in that PCIe endpoint 1590 equipment is accessed in computer system by PCIe bus, which comprises
After the processor in the computer system sends access request to the PCIe endpoint 1590 equipment, the message status of the access request is monitored, wherein, the message status of the access request includes being completed or not completing, the unfinished response message for indicating the not sent access request of PCIe endpoint 1590 equipment；
When preset trigger condition reaches, the message status of the access request is determined；
If the message status of the access request is " unfinished ", the analog response message of the access request is obtained；
The analog response message of the access request is sent to the processor, wherein, the simulation corresponding message of the access request includes first kind analog response message or Second Type analog response message, the first kind analog response message indicates that the PCIe endpoint 1590 equipment does not support the access request, the Second Type analog response message indicates that the PCIe endpoint 1590 unit exception, the first kind analog response message or Second Type analog response message are used to indicate the processor suspension to the subsequent access of the PCIe endpoint 1590 equipment.
14. according to the method for claim 13, which is characterized in that further include:
Receive the access request that the processor is sent, access request described in Xiang Suoshu PCIe endpoint 1590 device forwards；
Then, the message status to the access request, which is monitored, includes:
The response message for itself whether receiving the access request that the PCIe endpoint 1590 equipment is sent is monitored, if receiving the response message for the access request that the PCIe endpoint 1590 equipment is sent, the message status of the access request is recorded as being completed.
15. according to the method for claim 14, which is characterized in that after receiving the access request that the processor is sent, further includes: cache the access request；
Then, the message status by the access request, which is recorded as being completed, includes:
If receiving the response message for the access request that the PCIe endpoint 1590 equipment is sent, by the completed label of stamping of the access request of caching, or the access request of caching is deleted；
It is described when preset trigger condition reaches, determine that the message status of the access request includes:
When preset trigger condition reaches, the access request of query caching, if the label of the access request of caching is or the access request of caching is deleted, the message status for then determining the access request is to be completed, if the label of the access request of caching is or label is not completed in the access request of caching, it is determined that the message status of the access request is unfinished.
16. method according to claim 14 or 15, which is characterized in that after receiving the access request that the processor is sent, further includes: generate the analog response message of the access request, and cache the analog response message of the access request；
Then, the analog response message for obtaining the access request includes:
Obtain the analog response message of the access request of own cache.
17. the described in any item methods of 3-15 according to claim 1, which is characterized in that the preset trigger condition is that the PCIe endpoint 1590 equipment is abnormal offline；
The method also includes:
Monitor whether the PCIe endpoint 1590 equipment is abnormal offline, when determining that the PCIe endpoint 1590 equipment is abnormal offline, the step of executing the message status of the determination access request.
18. according to the method for claim 17, which is characterized in that whether the monitoring PCIe endpoint 1590 equipment is abnormal includes: offline
The abnormal offline notification for itself whether receiving the PCIe endpoint 1590 equipment determined, if so, determining that the PCIe endpoint 1590 equipment is abnormal offline.
19. according to the method for claim 18, which is characterized in that further include:
The abnormal offline notification of the PCIe endpoint 1590 equipment is forwarded to the processor, so that abnormal offline notification of the processor according to the PCIe endpoint 1590 equipment received, the corresponding physical equipment of the PCIe endpoint 1590 equipment is carried out down electrically operated.
20. the described in any item methods of 3-15 according to claim 1, which is characterized in that the preset trigger condition is the timer expired of the access request；
The method also includes:
Timing, after the timer expired, the step of executing the message status of the determination access request are carried out for the access request starting timer that the processor is sent.
21. according to the method for claim 20, which is characterized in that further include:
Determine the state of the PCIe endpoint 1590 equipment, if it is determined that the state of the PCIe endpoint 1590 equipment is abnormal offline, the abnormal offline notification of the PCIe endpoint 1590 equipment is then sent to the processor, so that abnormal offline notification of the processor according to the PCIe endpoint 1590 equipment received, the corresponding physical equipment of the PCIe endpoint 1590 equipment is carried out down electrically operated.
22. according to the method for claim 13, which is characterized in that the processor sends a plurality of access request to the PCIe endpoint 1590 equipment；
The described method includes:
The message status of every access request of a plurality of access request is monitored；
When preset trigger condition reaches, the quantity for not receiving the access request of response message in a plurality of access request is counted；
If the quantity is more than the first threshold value, the analog response message of the access request is obtained.
23. a kind of analog response device, which is characterized in that be applied to computer system, high speed peripheral component interconnects PCIe endpoint 1590 equipment and accesses in the computer system by PCIe bus, and described device includes:
Monitoring unit, for after the processor in the computer system sends access request to the PCIe endpoint 1590 equipment, the message status of the access request is monitored, wherein, the message status of the access request includes being completed or not completing, the unfinished response message for indicating the not sent access request of PCIe endpoint 1590 equipment；
Determination unit, for determining the message status of the access request according to the monitored results of the monitoring unit when preset trigger condition reaches；
Acquiring unit when for determining that the message status of the access request is " unfinished " in the determination unit, obtains the analog response message of the access request；
Response unit, for sending the analog response message that the acquiring unit obtains to the processor, wherein, the analog response message includes first kind analog response message or Second Type analog response message, the first kind analog response message indicates that the PCIe endpoint 1590 equipment does not support the access request, the Second Type analog response message indicates that the PCIe endpoint 1590 unit exception, the first kind analog response message or the Second Type analog response message are used to indicate the processor suspension to the subsequent access of the PCIe endpoint 1590 equipment.
24. device according to claim 23, which is characterized in that further include:
Interactive unit, for receiving the access request of the processor transmission, access request described in Xiang Suoshu PCIe endpoint 1590 device forwards；
Then the monitoring unit is specifically used for monitoring the response message whether interactive unit receives the access request that the PCIe endpoint 1590 equipment is sent, if receiving the response message for the access request that the PCIe endpoint 1590 equipment is sent, the message status of the access request is recorded as being completed.
25. device according to claim 24, which is characterized in that the monitoring unit is also used to cache the access request that the interactive unit receives；
The monitoring unit is specifically used for when the interactive unit receives the response message for the access request that the PCIe endpoint 1590 equipment is sent, by the label for stamping " being completed " of the access request of the caching, or delete the access request of caching；
The determination unit is specifically used for when preset trigger condition reaches, inquire the access request of the monitoring unit caching, if the label of the access request of caching is or the access request of caching is deleted, the message status for then determining the access request is to be completed, if the label of the access request of caching is or label is not completed in the access request of caching, it is determined that the message status of the access request is unfinished.
26. the device according to claim 24 or 25, it is characterized in that, the monitoring unit is also used to, after the access request that the interactive unit receives that the processor is sent, the analog response message of the access request is generated, and caches the analog response message of the access request；
Then, the acquiring unit is specifically used for obtaining the analog response message of the access request of the monitoring unit caching.
27. the device according to claim 24 or 25, which is characterized in that the preset trigger condition is that the PCIe endpoint 1590 equipment is abnormal offline；
The monitoring unit is also used to: monitor whether the PCIe endpoint 1590 equipment is abnormal offline, when determining that the PCIe endpoint 1590 equipment is abnormal offline, and the step of notifying the determination unit to execute the message status of the determination access request.
28. device according to claim 27, which is characterized in that the monitoring unit is specifically used for: determining whether the interactive unit receives the abnormal offline notification of the PCIe endpoint 1590 equipment, if so, determining that the PCIe endpoint 1590 equipment is abnormal offline.
29. device according to claim 28, which is characterized in that the interactive unit is also used to:
The abnormal offline notification of the PCIe endpoint 1590 equipment is forwarded to the processor, so that abnormal offline notification of the processor according to the PCIe endpoint 1590 equipment received, the corresponding physical equipment of the PCIe endpoint 1590 equipment is carried out down electrically operated.
30. the device according to claim 24 or 25, which is characterized in that the preset trigger condition is the timer expired of the access request；
The monitoring unit is also used to:
Timing, after the timer expired, the step of notifying the determination unit to execute the message status of the determination access request are carried out for the access request starting timer that the processor is sent.
31. device according to claim 30, which is characterized in that the monitoring unit is also used to:
Determine the state of the PCIe endpoint 1590 equipment, if it is determined that the state of the PCIe endpoint 1590 equipment is abnormal offline, the interactive unit is then notified to send the abnormal offline notification of the PCIe endpoint 1590 equipment to the processor, so that abnormal offline notification of the processor according to the PCIe endpoint 1590 equipment received, the corresponding physical equipment of the PCIe endpoint 1590 equipment is carried out down electrically operated.
32. device according to claim 23, which is characterized in that the processor sends a plurality of access request to the PCIe endpoint 1590 equipment；
The monitoring unit is specifically used for being monitored the message status of every access request of a plurality of access request；
Whether the determination unit is specifically used for when preset trigger condition reaches, count the quantity for not receiving the access request of response message in a plurality of access request, determine the quantity more than the first threshold value；
The acquiring unit is specifically used for obtaining the analog response message of the access request when the quantity is more than the first threshold value.
33. a kind of computer characterized by comprising processor, memory, bus and communication interface；
The memory is for storing computer executed instructions, the processor is connect with the memory by the bus, when computer operation, the processor executes the computer executed instructions of the memory storage, so that the computer perform claim requires method described in 13-22 any one.
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