CN108400903A - A kind of physical layer link status detection method and device - Google Patents
A kind of physical layer link status detection method and device Download PDFInfo
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- CN108400903A CN108400903A CN201810059570.6A CN201810059570A CN108400903A CN 108400903 A CN108400903 A CN 108400903A CN 201810059570 A CN201810059570 A CN 201810059570A CN 108400903 A CN108400903 A CN 108400903A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
- H04L41/0661—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities by reconfiguring faulty entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
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Abstract
The present invention provides a kind of physical layer link status detection method and device, this method includes：Detect whether the SATA controller has been established physical layer link；After the physical layer link has been established in the SATA controller, at least one flag bit for the high speed serialization transceiver for including to the SATA controller is detected；According to at least one flag bit be detected as a result, determining whether the physical layer link breaks down；If so, controlling the high speed serialization transceiver transmission link by the control module that the SATA controller includes rebuilds instruction, to re-establish the physical layer link；If not, at least one flag bit for executing the high speed serialization transceiver for including to the SATA controller is detected.This programme can improve the reliability of data transmission.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of physical layer link status detection method and device.
Background technology
With the continuous development of electronic information technology, data volume to be processed needed for signal processing, data transmission procedure is got over
Come it is bigger, it is general at present to use in order to meet high speed, the stability requirement that user proposes data transmission and data storage procedure
SATA (Serial Advanced Technology Attachment, Serial Advanced Technology Attachment) controller realizes high speed number
According to transmission.SATA controller is divided into application layer, transport layer, link layer and physical layer, the physical layer of SATA controller from top to down
Including control module and high speed serialization transceiver, control module and high speed serialization transceiver be responsible for establishing host side and equipment end it
Between data transmission physical layer link.SATA controller needs to ensure being normally carried out for data transmission procedure to physical layer
The state of link is detected.
Currently, SATA controls are detected physical layer link by application layer, when physical layer link breaks down, lead to
Application layer control lower layer functional reduction is crossed, realizes the reconnect of physical layer link.
For the method being detected at present to physical layer link, when physical layer link breaks down, under application layer control
When layer function resets, need to restart entire agreement, physical layer link needs the long period that can restore to connection status, this mistake
Journey be easy to cause the loss of data, causes the reliability of data transmission relatively low.
Invention content
An embodiment of the present invention provides a kind of physical layer link status detection method and device, can improve data transmission
Reliability.
In a first aspect, an embodiment of the present invention provides a kind of physical layer link status detection method, it is applied to serial advanced
Technical Appendix SATA controller, including：
Detect whether the SATA controller has been established physical layer link；
After the physical layer link has been established in the SATA controller, the high speed serialization that includes to the SATA controller
At least one flag bit of transceiver is detected；
According to at least one flag bit be detected as a result, determine the physical layer link whether occur therefore
Barrier；
If so, controlling the high speed serialization transceiver transmission link by the control module that the SATA controller includes
Instruction is rebuild, to re-establish the physical layer link；
If not, execute at least one flag bit of the high speed serialization transceiver for including to the SATA controller into
Row detection.
Optionally,
At least one flag bit of the high speed serialization transceiver for including to the SATA controller is detected, packet
It includes：
To the alignment of data flag bit of the high speed serialization transceiver, link establishment flag bit, transmission rate flag bit and
Any one or more in data transmit-receive flag bit are detected, wherein the alignment of data flag bit is described for characterizing
The data that high speed serialization transceiver receives include COMMA codes, and the link establishment flag bit is for characterizing the physical layer
The connection status of link, the transmission rate flag bit are used for the locked message transmission rate of characterize data communication ends, the number
It is used to characterize the state that the high speed serialization transceiver is forwarded data according to transmitting-receiving flag bit.
Optionally,
The result that the basis is detected at least one flag bit determines whether the physical layer link occurs
Failure, including：
When at least one flag bit includes the alignment of data flag bit, judge that the alignment of data flag bit is
It is no periodically to occur according to the pre-defined period 1, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the link establishment flag bit, the link establishment flag bit is judged
Whether numerical value is identical as pre-defined normal value, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the transmission rate flag bit, judge that the transmission rate flag bit is
It is no periodically to occur according to pre-defined second round, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the data transmit-receive flag bit, judge that the data transmit-receive flag bit is
It is no periodically to occur in pairs according to the pre-defined period 3, if not, determining that the physical layer link breaks down.
Optionally,
The control module for including by the SATA controller controls the high speed serialization transceiver transmission link weight
Instruction is built, including：
The high speed serialization transceiver is controlled by the control module, makes the high speed serialization transceiver to external number
Corresponding out of band data OOB signals and coding primitive are sent according to communication ends, and receives the link that the data communication ends return
Receipt is established, to re-establish the physical layer link.
Optionally,
Determine whether the physical layer link is sent out in the result that the basis is detected at least one flag bit
After raw failure, further comprise：
If it is determined that the physical layer link breaks down, the testing result of at least one flag bit is recorded pre-
In the journal file first created.
Second aspect, the embodiment of the present invention additionally provide a kind of physical layer link status detection device, are applied to SATA and control
Device processed, including：Detection unit, judging unit and execution unit；
The detection unit for detecting whether the SATA controller has been established physical layer link, and is establishing physics
At least one flag bit for the high speed serialization transceiver for including to the SATA controller after layer link is detected；
The judging unit, for according to the detection unit at least one flag bit be detected as a result,
Determine whether the physical layer link breaks down；
The execution unit, for when the judging unit determines that the physical layer link breaks down, by described
The control module that SATA controller includes controls the high speed serialization transceiver transmission link and rebuilds instruction, described to re-establish
Physical layer link, and when the judging unit determines that the physical layer link does not break down, trigger the detection unit
At least one flag bit for executing the high speed serialization transceiver for including to the SATA controller is detected.
Optionally,
The detection unit, for the alignment of data flag bit of the high speed serialization transceiver, link establishment flag bit,
Any one or more in transmission rate flag bit and data transmit-receive flag bit are detected, wherein the alignment of data mark
Will position includes COMMA codes for characterizing the data that the high speed serialization transceiver receives, and the link establishment flag bit is used
In the connection status for characterizing the physical layer link, the transmission rate flag bit is used for the locked data of characterize data communication ends
Transmission rate, the data transmit-receive flag bit is for characterizing the state that the high speed serialization transceiver is forwarded data.
Optionally,
The judging unit, for executing following operation：
When at least one flag bit includes the alignment of data flag bit, judge that the alignment of data flag bit is
It is no periodically to occur according to the pre-defined period 1, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the link establishment flag bit, the link establishment flag bit is judged
Whether numerical value is identical as pre-defined normal value, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the transmission rate flag bit, judge that the transmission rate flag bit is
It is no periodically to occur according to pre-defined second round, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the data transmit-receive flag bit, judge that the data transmit-receive flag bit is
It is no periodically to occur in pairs according to the pre-defined period 3, if not, determining that the physical layer link breaks down.
Optionally,
The execution unit, for when the judging unit determines that the physical layer link breaks down, by described
Control module controls the high speed serialization transceiver, so that the high speed serialization transceiver is sent to external data communication ends opposite
The out of band data OOB signals and coding primitive answered, and the link establishment receipt that the data communication ends return is received, to build again
Found the physical layer link.
Optionally,
The physical layer link status detection device further comprises：Recording unit；
The recording unit, for when the judging unit determines that the physical layer link breaks down, by the inspection
The testing result that unit is detected at least one flag bit is surveyed to be recorded in the journal file being pre-created.
Provided in an embodiment of the present invention kind of physical layer link status detection method and device, have built up in SATA controller
After physical layer link, at least one flag bit for the high speed serialization transceiver for including to SATA controller is detected, according to right
The result that each flag bit is detected determines whether physical layer link breaks down, when determining that physical layer link breaks down
Afterwards, the control module for including by SATA controls controls high speed serialization transceiver transmission link and rebuilds instruction, to realize physical layer
Link re-establishes.When the physical layer link of SATA controller breaks down, SATA controller high speed serial transceiver
Flag bit can occur to change accordingly, therefore can determine physical layer chain by detecting the flag bit of high speed serialization transceiver
Whether road breaks down, and directly rebuilds instruction in physical layer transmission link after determining that physical layer link breaks down and realizes physics
Layer link re-establishes, and due to being not necessarily to restart entire agreement, physical layer link can be made to restore to connecting within a short period of time
State reduces the risk of loss of data, so as to improve the reliability of data transmission.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of flow chart of physical layer link status detection method provided by one embodiment of the present invention；
Fig. 2 is the flow chart of another physical layer link status detection method provided by one embodiment of the present invention；
Fig. 3 is the signal of equipment where a kind of physical layer link status detection device provided by one embodiment of the present invention
Figure；
Fig. 4 is a kind of schematic diagram of physical layer link status detection device provided by one embodiment of the present invention；
Fig. 5 is the schematic diagram of another physical layer link status detection device provided by one embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, an embodiment of the present invention provides a kind of physical layer link status detection method, it is applied to SATA (strings
Row Advanced Technology Attachment) controller, this method may comprise steps of：
Step 101：Whether detection SATA controller has been established physical layer link；
Step 102：After physical layer link has been established in SATA controller, the high speed serialization that SATA controller includes is received and dispatched
At least one flag bit of device is detected；
Step 103：According to at least one flag bit be detected as a result, determine physical layer link whether occur therefore
Barrier, if so, step 104 is executed, it is no to then follow the steps 102；
Step 104：The control module control high speed serialization transceiver transmission link reconstruction for including by SATA controller refers to
It enables, to re-establish physical layer link.
An embodiment of the present invention provides a kind of physical layer link status detection methods, and physics is had built up in SATA controller
After layer link, at least one flag bit for the high speed serialization transceiver for including to SATA controller is detected, according to each
The result that flag bit is detected determines whether physical layer link breaks down, after determining that physical layer link breaks down,
The control module for including by SATA controls controls high speed serialization transceiver transmission link and rebuilds instruction, to realize physical layer link
Re-establish.When the physical layer link of SATA controller breaks down, the mark of SATA controller high speed serial transceiver
Will position can occur to change accordingly, therefore can be to determine physical layer link by detecting the flag bit of high speed serialization transceiver
It is no to break down, after determining that physical layer link breaks down directly instruction realization physical layer chain is rebuild in physical layer transmission link
Road re-establishes, and due to being not necessarily to restart entire agreement, physical layer link can be made to restore to connection status within a short period of time,
The risk for reducing loss of data, so as to improve the reliability of data transmission.
It optionally, can be to height as shown in Figure 1, when being detected to the flag bit of high speed serialization transceiver in step 102
In the alignment of data flag bit of fast serial transceiver, link establishment flag bit, transmission rate flag bit and data transmit-receive flag bit
Any one or more be detected.Wherein, alignment of data flag bit is for characterizing the number that high speed serialization transceiver receives
According to including COMMA codes, link establishment flag bit is used to characterize the connection status of physical layer link, and transmission rate flag bit is used for
The locked message transmission rate of characterize data communication ends, data transmit-receive flag bit for characterize high speed serialization transceiver to data into
The state of row forwarding.
When different types of failure occurs for the physical layer link of SATA controller, the unlike signal of high speed serialization transceiver
Position can occur to change accordingly, therefore be detected to multiple flag bits of high speed serialization transceiver, it may be determined that go out SATA controls
The physical layer link of device processed due to various reasons caused by failure, raising the failure of physical layer link is detected it is accurate
Property, to carry out link re-establishment in time after physical layer link breaks down, ensure SATA controller to data be transmitted can
By property.
When SATA controller is based on FPGA (Field-Programmable Gate Array, field programmable gate array)
When platform, the model for the high speed serialization transceiver that SATA controller includes can be RocketIO GTX.Correspondingly, when high speed
When the model of serial transceiver can be RocketIO GTX, alignment of data flag bit can be rxcommadet,
Rxcommadet represents whether high speed serialization transceiver detects COMMA codes, the synchronization and detection of COMMA codes in receiving data
It is to complete the alignment of data；Link establishment flag bit can be rxstatus, and rxstatus represents the detection shape of OOB signals
State, OOB signals only work during link establishment, are not in OOB signals in normal course of communications；Transmission
Rate indicator position can be sync_det, and sync_det represents the detection to data synchronization primitives, be high-speed serial data communication
The middle synchronous mark position for judging equipment end and whether locking transmission rate；Data transmit-receive flag bit can be align_det, align_
Det represents the detection to ALIGN primitive, which exists always in SATA communication process, need to detect transmission simultaneously in pairs
Whether end and receiving terminal are occurred by certain clock cycle.
Optionally, as shown in Figure 1, basis determines physical layer chain to the result that each flag bit is detected in step 103
When whether road breaks down, according to the difference of detected flag bit, different criterions is taken, it is specifically as follows：
When each flag bit detected includes alignment of data flag bit, judge alignment of data flag bit whether according to
The pre-defined period 1 carries out periodical appearance, if it is judged that can not be gone here and there to high speed according to COMMA codes for no explanation
Data received by row transceiver are aligned, and the data that high speed serialization transceiver receives can be caused to cause confusion, therefore
Determine that the physical layer link of SATA controller breaks down；
When each flag bit detected includes link establishment flag bit, judge that the numerical value of link establishment flag bit is
It is no identical as pre-defined normal value, if it is not the same, illustrating that the data that high speed serialization transceiver receives include link
Instruction is created, and in normal course of communications is not in link establishment instruction, so that it is determined that the physical layer link of SATA controller
It breaks down；
When each flag bit detected includes transmission rate flag bit, judge transmission rate flag bit whether according to
Pre-defined second round carries out periodical appearance, if it is judged that being no, illustrates data communication ends not to transmission speed
Rate is locked, and the rate that high speed serialization transceiver receives the rate and data communication ends transmission data of data can be caused obstructed
It crosses, causes the loss of data, so that it is determined that the physical layer link of SATA controller breaks down；
When each flag bit detected includes data transmit-receive flag bit, judge data transmit-receive flag bit whether according to
The pre-defined period 3 periodically occur in pairs, if it is judged that being no, illustrates that physical layer link is sent out from data
Sending end receives data with to the asynchronous progress of data receiver transmission data, can lead to data stack and lose, it is thus determined that
The physical layer link of SATA controller breaks down.
According to the difference of detected flag bit, different standards is taken to judge the shape of physical layer link in SATA controller
State does not break down when according to the physical layer link of the determining SATA controller of the result being detected to each flag bit
When, it determines that the physical layer link of SATA controller does not break down, is determined when according to the testing result of any one flag bit
When the physical layer link of SATA controller breaks down, determine that the physical layer link of SATA controller breaks down, it is comprehensive to each
The result that a flag bit is detected determines whether physical layer link breaks down, and ensures to SATA controller physical layer link
The accuracy that state is detected.
As the model RocketIO GTX of SATA controller high speed serial transceiver, at the same to rxcommadet,
This four flag bits of rxstatus, sync_det, align_det are detected, and often pass through one or more clock cycle, detection
Whether there are rxcommadet, sync_det, align_det these three flag bits, at the same detect rxstatus numerical value whether
For 3 ' b000 of normal value.If any one or more without periodically in rxcommadet, sync_det, align_det
Occur or the numerical value of rxstatus is different from normal value, it is determined that the physical layer link of high speed serialization transceiver breaks down.
Optionally, as shown in Figure 1, after step 103 determines that physical layer link breaks down, include by SATA air
Control module controls high speed serialization transceiver, so that high speed serialization transceiver is sent to external data communication ends corresponding
OOB signals and coding primitive, and receive data communication ends return link establishment receipt, to re-establish physical layer link.
After determining that physical layer link breaks down, high speed serialization transceiver is controlled by control module and is sent specifically
OOB signals and specific coding primitive, and the link establishment for receiving the return of external equipment end is drawn, and is handed over external equipment end
Mutually, physical layer link is re-established.When physical layer link breaks down, in the physical layer completion closest to bottom hardware interface
Data path re-establishes, and restores the normal transmission of data in time, ensures that there are SATA controller relatively reliable data to pass
Movement Capabilities.
Optionally, as shown in Figure 1, after step 103 determines that physical layer link breaks down, each flag bit will be carried out
The testing result of detection is recorded in journal file common in advance.
It, will be to each after basis determines that physical layer link breaks down to the result that each flag bit is detected each time
The testing result that flag bit is detected is recorded in the journal file being pre-created, and object can be subsequently read from journal file
The information of reason layer link each flag bit when breaking down each time, convenient the reason of breaking down to physical layer link, divide
Analysis.
Below by taking the SATA controller based on FPGA platform as an example, to physical layer link status provided in an embodiment of the present invention
Detection method is described in further detail, as shown in Fig. 2, this method may comprise steps of：
Step 201：Detection SATA controller whether physical layer link has been established, if so, execute step 202, otherwise after
It is continuous to execute step 201.
In embodiments of the present invention, whether the physical layer link for detecting SATA controller is successfully established, and starts normal
Communication, can be detected the flag bit of SATA controller high speed serial transceiver if physical layer link has been established,
Step 202 is correspondingly executed, if physical layer link is successfully established not yet, without the flag bit to high speed serialization transceiver
It is detected, whether the physical layer link for continuing to detect SATA controller is established, until physical layer link is successfully established.
For example, in SATA controller included high speed serialization transceiver model RocketIO GTX, SATA controller
The ends FPGA (host side) are deployed in, are communicated for realizing the data between the ends FPGA and solid state disk end (equipment end).Work as inspection
The link establishment success in SATA controller is measured, after the ends FPGA and solid state disk end can be with normal communications, executes step 202,
Otherwise step 201 is continued to execute until the link establishment in SATA controller is successful.
Step 202：The flag bit of high speed serialization transceiver is detected.
In embodiments of the present invention, according to the pre-defined period, respectively to each flag bit of high speed serialization transceiver
It is detected.
For example, often passing through a clock cycle, to the following four flag bit of SATA controller high speed serial transceiver
It is detected, four flag bits are respectively rxcommadet, rxstatus, sync_det and align_det.Wherein, to four
When flag bit is detected, whether detection there is rxcommadet, sync_det and align_det in present clock period,
And detect the value of rxstatus.
Step 203：Determine whether physical layer link breaks down according to the testing result of each flag bit, if so, holding
Row step 204, it is no to then follow the steps 202.
In embodiments of the present invention, after each flag bit to high speed serialization transceiver is detected, according to each
It is that flag bit is detected as a result, judging whether the physical layer link of SATA controller breaks down, if it is determined that physical layer chain
Road, which is broken down, to be thened follow the steps 204 and re-establishes physical layer link, if it is determined that physical layer link does not break down, and returns
Receipt row step 202 continues to be detected the flag bit of high speed serialization transceiver.Wherein, according to each flag bit into
When the result of row detection determines whether physical layer link breaks down, object is judged according to the testing result of each flag bit respectively
Whether reason layer link breaks down, if judging that physical layer link breaks down according at least one flag bit, it is determined that object
Reason layer link breaks down.
For example, often passing through a clock cycle, detect whether rxcommadet, sync_det and align_det occur,
And whether the value of detection rxstatus is identical as 3 ' b000 of preset normal value.If rxcommadet, sync_det
Do not occur with any one or more in align_det or the value of rxstatus is different from 3 ' b000 of normal value, then
It determines that physical layer link breaks down, correspondingly executes step 204；If rxcommadet, sync_det and align_det are equal
Occur, and the value of rxstatus is identical as 3 ' b000 of normal value, it is determined that physical layer link does not send failure, correspondingly
Execute step 202.
Step 204：High speed serialization transceiver transmission link, which is controlled, by control module rebuilds instruction.
In embodiments of the present invention, after determining that physical layer link breaks down, the control that includes by SATA controller
Module controls high speed serialization transceiver, so that high speed serialization transceiver transmission link is rebuild instruction, to re-establish physics
Layer link eliminates the failure that physical layer link is occurred.Specifically, high speed serialization transceiver is controlled by controller and sends OOB
Signal and coding primitive, and the link establishment receipt of return is received, with resume physical layer link again.
For example, being controlled high speed serialization transceiver by the control module that SATA controls include, high speed serialization is made to receive
It sends out device and sends specific OOB signals and specific coding primitive to solid state disk end, interacted with solid state disk end, reconnected
Physical layer link between solid state disk end and the ends FPGA.
Step 205：The testing result of each flag bit is recorded in the journal file being pre-created.
In embodiments of the present invention, after re-establishing physical layer link, the detection that each flag bit will be detected
As a result it is recorded in the journal file being pre-created.
As shown in Figure 3, Figure 4, an embodiment of the present invention provides a kind of physical layer link status detection devices.Device embodiment
It can also be realized by way of hardware or software and hardware combining by software realization.For hardware view, such as Fig. 3
It is shown, it is a kind of hardware structure diagram of equipment where physical layer link status detection device provided in an embodiment of the present invention, in addition to
Except processor shown in Fig. 3, memory, network interface and nonvolatile memory, the equipment in embodiment where device is logical
It often can also include other hardware, such as be responsible for the forwarding chip of processing message.For implemented in software, as shown in figure 4, making
It is by the CPU of equipment where it by corresponding computer journey in nonvolatile memory for the device on a logical meaning
Sequence instruction reads what operation in memory was formed.Physical layer link status detection device provided in this embodiment, including：Detection is single
Member 401, judging unit 402 and execution unit 403；
Detection unit 401 for detecting whether SATA controller has been established physical layer link, and is establishing physical layer link
At least one flag bit for the high speed serialization transceiver for including to SATA controller later is detected；
Judging unit 402, for according to detection unit 401 at least one flag bit be detected as a result, determine object
Whether reason layer link breaks down；
Execution unit 403, for when judging unit 402 determines that physical layer link breaks down, passing through SATA controller
Including control module control high speed serialization transceiver transmission link rebuild instruction, to re-establish physical layer link, and sentencing
When disconnected unit 402 determines that physical layer link does not break down, detection trigger unit 401 executes the height for including to SATA controller
At least one flag bit of fast serial transceiver is detected.
Optionally,
Detection unit 401, for the alignment of data flag bit of high speed serialization transceiver, link establishment flag bit, transmission
Any one or more in rate indicator position and data transmit-receive flag bit are detected, wherein alignment of data flag bit is used for
The data that characterization high speed serialization transceiver receives include COMMA codes, and link establishment flag bit is for characterizing physical layer link
Connection status, transmission rate flag bit be used for the locked message transmission rate of characterize data communication ends, data transmit-receive flag bit
The state that data are forwarded for characterizing high speed serialization transceiver.
Optionally,
Judging unit 402, for executing following operation：
When at least one flag bit includes alignment of data flag bit, judge alignment of data flag bit whether according to fixed in advance
The period 1 of justice periodically occurs, if not, determining that physical layer link breaks down；
When at least one flag bit includes link establishment flag bit, judge link establishment flag bit numerical value whether in advance
The normal value first defined is identical, if not, determining that physical layer link breaks down；
When at least one flag bit includes transmission rate flag bit, judge transmission rate flag bit whether according to fixed in advance
The second round of justice periodically occurs, if not, determining that physical layer link breaks down；
When at least one flag bit includes data transmit-receive flag bit, judge data transmit-receive flag bit whether according to fixed in advance
The period 3 of justice periodically occurs in pairs, if not, determining that physical layer link breaks down.
Optionally,
Execution unit 403, for when judging unit 402 determines that physical layer link breaks down, passing through control module control
High speed serialization transceiver processed makes high speed serialization transceiver send corresponding out of band data OOB letters to external data communication ends
Number and coding primitive, and receive data communication ends return link establishment receipt, to re-establish physical layer link.
Optionally, on the basis of physical layer link status detection device shown in Fig. 4, as shown in figure 5, this shows physical layer chain
Line state detection device further comprises：Recording unit 504；
Recording unit 504, for judging unit 402 determine physical layer link break down when, detection unit 401 is right
The testing result that at least one flag bit is detected is recorded in the journal file being pre-created.
The contents such as the information exchange between each unit, implementation procedure in above-mentioned apparatus, due to implementing with the method for the present invention
Example is based on same design, and particular content can be found in the narration in the method for the present invention embodiment, and details are not described herein again.
The embodiment of the present invention additionally provides a kind of readable medium, including executes instruction, when the processor of storage control is held
When being executed instruction described in row, the storage control executes the physical layer link status detection side that above-mentioned each embodiment provides
Method.
The embodiment of the present invention additionally provides a kind of storage control, including：Processor, memory and bus；
The memory is executed instruction for storing, and the processor is connect with the memory by the bus, when
When the storage control operation, the processor executes the described of memory storage and executes instruction, so that the storage
Controller executes the physical layer link status detection method that above-mentioned each embodiment provides.
In conclusion the physical layer link status detection method and device that each embodiment of the present invention provides, at least have
Following advantageous effect：
1, in embodiments of the present invention, after SATA controller has built up physical layer link, include to SATA controllers
At least one flag bit of high speed serialization transceiver be detected, determined according to the result being detected to each flag bit
Whether physical layer link breaks down, and after determining that physical layer link breaks down, the control module for including is controlled by SATA
It controls high speed serialization transceiver transmission link and rebuilds instruction, to realize re-establishing for physical layer link.When SATA controller
When physical layer link breaks down, the flag bit of SATA controller high speed serial transceiver can occur to change accordingly, therefore
It can determine whether physical layer link breaks down by detecting the flag bit of high speed serialization transceiver, when determining physical layer chain
Road directly rebuilds instruction in physical layer transmission link after breaking down and realizes re-establishing for physical layer link, due to being not necessarily to restart
Entire agreement can be such that physical layer link restores to connection status within a short period of time, reduce the risk of loss of data, to
The reliability of data transmission can be improved.
2, in embodiments of the present invention, when different types of failure occurs for the physical layer link of SATA controller, high speed
The unlike signal position of serial transceiver can occur to change accordingly, therefore be examined to multiple flag bits of high speed serialization transceiver
It surveys, it may be determined that failure caused by haveing the physical layer link of SATA controller due to various reasons is improved to physical layer link
The accuracy that failure is detected ensures SATA controller to carry out link re-establishment in time after physical layer link breaks down
The reliability that data are transmitted.
3, in embodiments of the present invention, according to the difference of detected flag bit, different standards is taken to judge that SATA is controlled
The state of physical layer link in device, when the physical layer for determining SATA controller according to the result being detected to each flag bit
When link does not break down, determine that the physical layer link of SATA controller does not break down, when according to any one mark
When the testing result of position determines that the physical layer link of SATA controller breaks down, the physical layer link hair of SATA controller is determined
Raw failure, the comprehensive result being detected to each flag bit determine whether physical layer link breaks down, and ensure to SATA
The accuracy that controller physical layer link status is detected.
4, in embodiments of the present invention, after determining that physical layer link breaks down, high speed is controlled by control module and is gone here and there
Row transceiver sends specific OOB signals and specific coding primitive, and the link establishment for receiving the return of external equipment end is drawn, with
External equipment end interacts, and re-establishes physical layer link.When physical layer link breaks down, hard closest to bottom
The physical layer of part interface completes re-establishing for data path, restores the normal transmission of data in time, ensures SATA controller tool
There are relatively reliable data transmission capabilities.
It should be noted that herein, such as first and second etc relational terms are used merely to an entity
Or operation is distinguished with another entity or operation, is existed without necessarily requiring or implying between these entities or operation
Any actual relationship or order.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-
It is exclusive to include, so that the process, method, article or equipment including a series of elements includes not only those elements,
But also include other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some elements.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including
There is also other identical factors in the process, method, article or equipment of the element.
One of ordinary skill in the art will appreciate that：Realize that all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in computer-readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes：ROM, RAM, magnetic disc or light
In the various media that can store program code such as disk.
Finally, it should be noted that：The foregoing is merely presently preferred embodiments of the present invention, is merely to illustrate the skill of the present invention
Art scheme, is not intended to limit the scope of the present invention.Any modification for being made all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., are included within the scope of protection of the present invention.
Claims (10)
1. a kind of physical layer link status detection method is applied to Serial Advanced Technology Attachment SATA controller, which is characterized in that
Including：
Detect whether the SATA controller has been established physical layer link；
After the physical layer link has been established in the SATA controller, the high speed serialization that the SATA controller includes is received and dispatched
At least one flag bit of device is detected；
According to at least one flag bit be detected as a result, determining whether the physical layer link breaks down；
It is rebuild if so, controlling the high speed serialization transceiver transmission link by the control module that the SATA controller includes
Instruction, to re-establish the physical layer link；
If not, at least one flag bit for executing the high speed serialization transceiver for including to the SATA controller is examined
It surveys.
2. according to the method described in claim 1, it is characterized in that, the high speed serialization for including to the SATA controller is received
At least one flag bit of hair device is detected, including：
To the alignment of data flag bit of the high speed serialization transceiver, link establishment flag bit, transmission rate flag bit and data
Any one or more being detected in transmitting-receiving flag bit, wherein the alignment of data flag bit is for characterizing the high speed
The data that serial transceiver receives include COMMA codes, and the link establishment flag bit is for characterizing the physical layer link
Connection status, the transmission rate flag bit is used for the locked message transmission rate of characterize data communication ends, and the data are received
Hair flag bit is for characterizing the state that the high speed serialization transceiver is forwarded data.
3. according to the method described in claim 2, it is characterized in that, the basis is detected at least one flag bit
Result determine whether the physical layer link breaks down, including：
When at least one flag bit includes the alignment of data flag bit, judge whether the alignment of data flag bit is pressed
Periodically occur according to the pre-defined period 1, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the link establishment flag bit, the numerical value of the link establishment flag bit is judged
It is whether identical as pre-defined normal value, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the transmission rate flag bit, judge whether the transmission rate flag bit is pressed
Periodically occur according to pre-defined second round, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the data transmit-receive flag bit, judge whether the data transmit-receive flag bit is pressed
Periodically occur in pairs according to the pre-defined period 3, if not, determining that the physical layer link breaks down.
4. according to the method described in claim 1, it is characterized in that, the control module for including by the SATA controller
It controls the high speed serialization transceiver transmission link and rebuilds instruction, including：
The high speed serialization transceiver is controlled by the control module, keeps the high speed serialization transceiver logical to external data
Believe that end sends corresponding out of band data OOB signals and coding primitive, and receives the link establishment that the data communication ends return
Receipt, to re-establish the physical layer link.
5. according to any method in Claims 1-4, which is characterized in that in the basis at least one mark
After the result that will position is detected determines whether the physical layer link breaks down, further comprise：
If it is determined that the physical layer link breaks down, advance wound is recorded in the testing result of at least one flag bit
In the journal file built.
6. a kind of physical layer link status detection device is applied to SATA controller, which is characterized in that including：Detection unit is sentenced
Disconnected unit and execution unit；
The detection unit for detecting whether the SATA controller has been established physical layer link, and is establishing physical layer chain
At least one flag bit for the high speed serialization transceiver for including to the SATA controller after road is detected；
The judging unit, for according to the detection unit at least one flag bit be detected as a result, determine
Whether the physical layer link breaks down；
The execution unit, for when the judging unit determines that the physical layer link breaks down, passing through the SATA
The control module that controller includes controls the high speed serialization transceiver transmission link and rebuilds instruction, to re-establish the physics
Layer link, and when the judging unit determines that the physical layer link does not break down, trigger the detection unit and execute
At least one flag bit of the high speed serialization transceiver for including to the SATA controller is detected.
7. device according to claim 6, which is characterized in that
The detection unit, for the alignment of data flag bit of the high speed serialization transceiver, link establishment flag bit, transmission
Any one or more in rate indicator position and data transmit-receive flag bit are detected, wherein the alignment of data flag bit
Include COMMA codes for characterizing the data that the high speed serialization transceiver receives, the link establishment flag bit is used for table
The connection status of the physical layer link is levied, the transmission rate flag bit is used for the locked data transmission of characterize data communication ends
Rate, the data transmit-receive flag bit is for characterizing the state that the high speed serialization transceiver is forwarded data.
8. device according to claim 7, which is characterized in that
The judging unit, for executing following operation：
When at least one flag bit includes the alignment of data flag bit, judge whether the alignment of data flag bit is pressed
Periodically occur according to the pre-defined period 1, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the link establishment flag bit, the numerical value of the link establishment flag bit is judged
It is whether identical as pre-defined normal value, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the transmission rate flag bit, judge whether the transmission rate flag bit is pressed
Periodically occur according to pre-defined second round, if not, determining that the physical layer link breaks down；
When at least one flag bit includes the data transmit-receive flag bit, judge whether the data transmit-receive flag bit is pressed
Periodically occur in pairs according to the pre-defined period 3, if not, determining that the physical layer link breaks down.
9. device according to claim 6, which is characterized in that
The execution unit, for when the judging unit determines that the physical layer link breaks down, passing through the control
Module controls the high speed serialization transceiver, so that the high speed serialization transceiver is sent to external data communication ends corresponding
Out of band data OOB signals and coding primitive, and the link establishment receipt that the data communication ends return is received, to re-establish
State physical layer link.
10. according to any device in claim 6 to 9, which is characterized in that further comprise：Recording unit；
The recording unit, it is for when the judging unit determines that the physical layer link breaks down, the detection is single
The testing result that member is detected at least one flag bit is recorded in the journal file being pre-created.
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| CN201810059570.6A CN108400903A (en) | 2018-01-22 | 2018-01-22 | A kind of physical layer link status detection method and device |
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| CN201810059570.6A CN108400903A (en) | 2018-01-22 | 2018-01-22 | A kind of physical layer link status detection method and device |
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