CN113158832B - Feed-through signal inspection method and device - Google Patents
Feed-through signal inspection method and device Download PDFInfo
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Abstract
The application provides a method and a device for checking feed-through signals. The method comprises the following steps: acquiring a signal check table of a feedthrough signal to be checked by a chip and an actual state table of the feedthrough signal acquired by the chip during simulation; determining the beat number of each feedthrough signal in the same group by using a signal check table and an actual state table; judging whether the beat number of each fed through signal in the same group is the same or not; if the two signals are the same, the consistency check of the fed through signal of the chip is confirmed to be passed; if the two signals are different, the consistency check of the fed through signal of the chip is determined not to pass.
Description
Technical Field
The application relates to the technical field of integrated circuits, in particular to a method and a device for detecting feed-through signals.
Background
Feedthrough (feedthru) is a description of a particular signal path in a chip integrated circuit, and in a module of an integrated circuit system, an output signal of the module is an input signal thereof, and the signal is called a feedthru signal, which is equivalent to the signal passing through the module. As shown in fig. 1a, the output signal of interface b of the Test Module is the input signal of interface a, and this signal line is called a feedthrough transmission line.
In a chip integrated circuit, there is a need to connect two non-adjacent modules, but since the on-chip circuitry is occupied by each module and no additional space is required for wiring, a feedthru signal is inserted in many modules that passes through some of the modules in the middle to connect two non-adjacent modules. As shown in the structure diagram of the application circuit of the feedthru signal in fig. 1b, the module M1 and the module M4 are connected by a group of feedthru signals, the group has 3 signal lines, the group of feedthru signals passes through the module M2 and the module M3, for the group of feedthru signals, it is necessary to ensure that the delay of the 3 signals of the group is the same after passing through the M2 and the M3, so as to ensure that the group of data is correctly sent to the module M4, otherwise, the group of signals received by the module M4 is always wrong, so that the module M4 cannot normally operate, and therefore, when the feedthru signal passes through a plurality of modules, it is necessary to check the consistency of the feedthru signal.
In addition, the back pressure signal is often transmitted through the feedthrough signal during chip design, and when the feedthrough signal is used, certain requirements are required on time delay, and the time delay of the feedthrough signal needs to be checked during design. Referring to fig. 1b, a module M1 represents a receiver, a module M2 and a module M3 represent an intermediate processing module, a module M4 represents a FIFO (First Input First Output) buffer, and the module M1 processes received data through three signals and transmits the processed data to the module M4 for buffering through the module M2 and the module M3. Since the backpressure signal transmission requires time, when the data stored in the module M4 reaches a threshold smaller than the maximum capacity, the module M1 needs to be notified in advance by the backpressure signal to notify the module M1 that the data cannot be received any more, thereby avoiding the data overflow of the module M4. For example, 1 clock cycle of the module M1 receives and stores 1 data, the size of the FIFO of the module M4 is 20, the threshold is set to 15, after the module M4 receives and stores 15 data, the module M4 needs to send a backpressure signal to notify that the module M1 can no longer receive data, however, since a certain time needs to pass from the interface a to the interface B, the time needs to be less than or equal to 5 (20-15) clock cycles to ensure that the FIFO of the module M4 does not overflow, it needs to ensure that the propagation time for transmitting the backpressure signal from the feedthrough signal line from the interface B to the interface a cannot exceed 5 clock cycles, and thus, the time delay for transmitting the backpressure signal by the feedthrough signal line needs to be checked.
In the prior art, when consistency check is performed on the feedthrough signals, a script tool is used for capturing beat numbers of all signals and filling the beat numbers into an Excel table, and then the beat numbers are manually compared to judge whether the feedthrough signals of all modules are consistent or not. However, the existing manual inspection method is not only labor-consuming, but also difficult to avoid missing the manual inspection or making the inspection wrong, etc. In particular, when the chip size becomes large and the number of modules involved in the chip becomes very large, the manual inspection method becomes extremely difficult.
Therefore, how to check the consistency of the feedthrough signal is one of the considerable technical problems.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for checking a feed-through signal, so as to automatically implement consistency check on the feed-through signal, and solve the problems of easy error and large workload caused by manual checking in the prior art.
Specifically, the method is realized through the following technical scheme:
according to a first aspect of the present application, there is provided a feedthru signal inspection method, comprising:
acquiring a signal check table of a feedthrough signal to be checked by a chip and an actual state table of the feedthrough signal acquired by the chip during simulation, wherein the signal check table comprises a signal identifier of the feedthrough signal and a group identifier of a group to which the feedthrough signal belongs, the group identifier comprises a module identifier of a destination module to which the feedthrough signal reaches, and the actual state table comprises a signal identifier of each feedthrough signal and the beat number of the feedthrough signal reaching the destination module from the starting module;
determining the beat number of each feedthrough signal in the same group by using the signal check table and the actual state table;
judging whether the beat number of each fed through signal in the same group is the same or not;
if the chip is the same as the feed through signal, the consistency check of the feed through signal of the chip is confirmed to be passed;
and if not, confirming that the consistency check of the fed through signal of the chip does not pass.
According to a second aspect of the present application, there is provided a feedthru signal inspection device, comprising:
the device comprises a first obtaining module, a second obtaining module and a third obtaining module, wherein the first obtaining module is used for obtaining a signal check table of a feedthrough signal to be checked by a chip and an actual state table of the feedthrough signal obtained by the chip during simulation, the signal check table comprises a signal identifier of the feedthrough signal and a group identifier of a group to which the feedthrough signal belongs, the group identifier comprises a module identifier of a destination module to which the feedthrough signal reaches, and the actual state table comprises a signal identifier of each feedthrough signal and a beat number of the feedthrough signal from a starting module to the destination module;
the determining module is used for determining the beat number of each feedback signal in the same group by using the signal check table and the actual state table;
the first judging module is used for judging whether the beat number of each fed through signal in the same group is the same or not;
the confirming module is used for confirming that the consistency check of the feedthrough signal of the chip passes if the judging result of the first judging module is the same; and if the judgment results of the first judgment module are different, confirming that the consistency check of the fed through signal of the chip does not pass.
According to a third aspect of the present application, there is provided an electronic device comprising a processor and a machine-readable storage medium, the machine-readable storage medium storing a computer program executable by the processor, the processor being caused by the computer program to perform the method provided by the first aspect of the embodiments of the present application.
According to a fourth aspect of the present application, there is provided a machine-readable storage medium storing a computer program which, when invoked and executed by a processor, causes the processor to perform the method provided by the first aspect of the embodiments of the present application.
The beneficial effects of the embodiment of the application are as follows:
the method comprises the steps of obtaining a signal check table of a chip and an actual state table obtained during chip simulation, determining the beat number of each fed through signal in the same group, and then determining whether the time delay of each fed through signal in the group is the same after the fed through signal reaches a target module by comparing whether the beat number of each fed through signal in the group is the same or not, so that consistency check of the fed through signal of the chip is automatically realized, and the problems that in the prior art, the workload is large and errors easily occur due to manual check of the fed through signal are solved.
Drawings
FIG. 1a is a schematic diagram of a feedback signal based on the Test module;
FIG. 1b is a schematic diagram of an applied circuit of the feedthrough signal;
fig. 2 is a flowchart of a feedthrough signal checking method according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a global dictionary provided in the embodiment of the present application;
fig. 4 is a flowchart of another feedthrough signal checking method provided in the embodiment of the present application;
fig. 5 is a schematic structural diagram of a feedthrough signal inspection apparatus provided in this embodiment;
fig. 6 is a schematic diagram of a hardware structure of an electronic device implementing the feedthrough signal checking method according to the embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with aspects such as the present application.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the corresponding listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if," as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination," depending on the context.
The feed-through signal inspection method provided by the present application is described in detail below.
Referring to fig. 2, fig. 2 is a flowchart of a method for checking a feedthru feed through signal provided by the present application, which may include the following steps:
s201, acquiring a signal check table of a feedthrough signal to be checked by a chip and an actual state table of the feedthrough signal acquired by the chip during simulation.
The signal checking table comprises a signal identifier of the feedthrough signal and a group identifier of a group to which the feedthrough signal belongs, the group identifier comprises a module identifier of the feedthrough signal reaching a target module, and the actual state table comprises the signal identifier of each feedthrough signal and the beat number of the feedthrough signal reaching the target module from the starting module.
In this step, in the chip front end design process, a signal check table of the feedthrough signal is created and maintained in advance, and is used to record and maintain the relevant information of the feedthrough signal that the chip needs to check, that is, the signal identifier of the feedthrough signal and the group identifier of the group to which the feedthrough signal belongs are recorded in the signal check table, and the group identifier includes the module identifier of the destination module to which the feedthrough signal arrives in the chip. Specifically, the signal check table maintains a signal identifier of a feedthrough signal to be checked during chip front end design and a Group of signals to which the feedthrough signal belongs, that is, a Group to which the feedthrough signal belongs, where the Group identifier of the Group is identified according to a certain rule, for example, the Group identifier may include a module identifier of a destination module to which the feedthrough signal arrives, for example, when the module identifier is a module name, each Group has a unique Group name, and the Group identifier of the Group is defined by "module identifier + Group name", for example, the Group identifier of the Group to which a certain feedthrough signal pair belongs is ICU _ Group _1, where ICU is the module name of the destination module to which the feedthrough signal arrives, and Group _1 is the Group name of the Group. In practical application, the group identifier may not include a module name of the destination module, but the groups correspond to the destination module one to one, so that the feedthrogh signal in each group is represented as a feedthrogh signal reaching one destination module, and thus, after the beat number in the same group is obtained subsequently, the obtained beat number can represent the beat number of the destination module reached by the feedthrogh signal in the group.
Specifically, in the chip front end design process, the design of the chip is subjected to simulation verification, the feedthrough signal is captured and output to the actual state table of the feedthrough signal in the simulation verification process, and the signal identification of the feedthrough signal and the beat number generated when the feedthrough signal reaches the destination module from the starting module are recorded in the actual state table.
It should be noted that the signal check table in this embodiment can be dynamically updated. Specifically, if a developer inserts a feedthrogh signal, deletes the feedthrogh signal, and adds or deletes a destination module to which the feedthrogh signal is to reach in a module of a chip, it is also necessary to perform addition or deletion operation of a corresponding identifier (signal identifier and/or group identifier) in the signal check table, so that the timeliness of information in the signal check table can be ensured, and a standard and basis are provided for subsequent feedthrogh signal inspection.
It should be noted that, in this embodiment, the signal identifier of the feedthru signal recorded in the signal check table is used for the name of the feedthru signal and the signal path identifier of the feedthru signal from the input (start module) to the output (destination module), the feedthru signal S1 is used for representing the signal from the start module c to the destination module d, and may be represented by S1: c-d, and the representation methods of other feedthru signals are similar to the feedthru signal S1, and are not described in detail here.
S202, determining the beat number of each feedthrough signal in the same group by using the signal check table and the actual state table.
In this step, for each group of identifiers included in the signal check table, the signal identifier of the feedthrough signal included in the group corresponding to the group of identifiers may be determined from the signal check table; and then determining the beat number corresponding to the feedthrough signal identification included in the group according to the feedthrough signal identification and the beat number corresponding to the feedthrough signal identification recorded in the actual state table, wherein the beat number is the beat number of the feedthrough signal in the group, the group identification of the group comprises the module identification of the destination module where the feedthrough signal arrives, and the determined beat number is the beat number of each feedthrough signal arriving at the destination module.
S203, judging whether the beat number of each fed through signal in the same group is the same; if yes, go to step S204; if the determination result is negative, step S205 is executed.
In this step, after the beat number of the feedthrough signal in each group is determined based on step S202, for each group, it may be determined whether the beat number of the feedthrough signal in the group is the same, and if the beat number of the feedthrough signal in the group is the same, it indicates that the time delays of the feedthrough signals passing through the destination module corresponding to the group are the same, so that the normal operation of the destination module can be ensured. On this basis, if the beat numbers of the feedthrough signals in each group are the same, it indicates that the feedthrough signals in each group can normally reach the corresponding destination module, so that it can be determined that the consistency check of the feedthrough signals of the chip is passed, that is, step S204 is executed. Otherwise, if it is determined that the number of beats of the feedthrough signal in any packet is different, it indicates that the time delay of the destination module where the feedthrough signal in the packet arrives is different, which indicates that there is an abnormality in the operation of the module, and thus indicates that there is a problem in chip design, and thus it is determined that the consistency check of the feedthrough signal of the chip fails, that is, step S205 is executed.
S204, confirming that the consistency check of the feedthrough signal of the chip is passed.
In this step, when the beat number of the fed through signals in the same group is the same, it indicates that the time delays of the fed through signals in the group are the same after reaching the destination module, so as to ensure that the working mechanism of the module does not have the condition of abnormal working caused by different time delays of the fed through signals, and further confirm that the consistency check of the fed through signals of the chip is passed;
s205, confirming that the consistency check of the feedthrough signal of the chip does not pass.
In this step, when the number of beats of the fed through signals in the same group is different, it indicates that the time delay of each fed through signal in the group is different, so that the output result of the working mechanism of the module caused by the different time delays of the fed through signals is abnormal, and the module cannot work normally all the time, and at this time, it can be determined that the consistency check of the fed through signals of the chip fails.
When the flow shown in fig. 2 is implemented, the consistency check flow of the feedthrough signal may be implemented by, but not limited to, using a Python program.
By implementing the method for checking the fed through signals, the beat number of each fed through signal in the same group is determined by obtaining the signal check table of the chip and the actual state table obtained during chip simulation, and then whether the time delay of each fed through signal in the group is the same after each fed through signal reaches the destination module is determined by comparing whether the beat number of each fed through signal in the group is the same, so that the consistency check of the fed through signals of the chip is automatically realized, and the problems of large workload and high error probability caused by manual checking of the fed through signals in the prior art are solved.
Optionally, after the flow shown in fig. 2 is executed, all modules may be checked, and then the check result that the consistency check fails is output and displayed, for example, the signal identifier of the feedback signal that the check fails and the group identifier to which the signal identifier belongs are output to a log file, and since the group identifier includes the module identifier, a user may position the module that the consistency check fails to pass, the feedback signal, and the like based on the log file, so as to facilitate the positioning of the abnormal module. For example, when the beat numbers corresponding to any packet are not consistent, the feedthrough signal related to the packet, the beat number, and the row number of the feedthrough signal in the actual state table are output together, so as to facilitate the positioning of the subsequent abnormal condition. It should be noted that the form of the signal check table may be, but is not limited to, a csv file.
Alternatively, the number of beats of the feedthrough signal in the same packet may be determined by using the signal check table and the actual state table according to the following procedure:
the method comprises the following steps: and acquiring a general dictionary, wherein the general dictionary is created according to the group identifiers in the signal check table and the beating times of the feedthrough signals in the actual state table, the general dictionary comprises at least one sub dictionary, the number of the sub dictionaries is the same as that of the group identifiers in the signal check table, the key words of the sub dictionaries are the group identifiers, the group identifiers corresponding to different sub dictionaries are different, and each sub dictionary comprises the signal identifiers of the feedthrough signals in the groups corresponding to the group identifiers and the beating times of the feedthrough signals.
Specifically, the general dictionary in this step is established in advance, that is, after the signal check table and the actual state table are acquired, the general dictionary may be created based on the two tables. It should be noted that, in practical applications, the process of establishing the global dictionary and the process of checking the feedthrough signal may be implemented by the same process, and in this embodiment, the process of establishing the global dictionary needs to be executed first, and then the process of checking the feedthrough signal needs to be executed; certainly, the process of establishing the global dictionary and the feedthrough signal check process can be implemented in parallel by two processes, but the process of establishing the global dictionary cannot influence the process of feedthrough signal check, that is, when the feedthrough signal check needs to acquire the global dictionary, the process of establishing the global dictionary can be completed before the process is performed, so that the efficiency of feedthrough signal check can be ensured.
Alternatively, the global dictionary may be created according to the group identifier in the signal check table and the beat number of the feedthrough signal in the actual state table according to the following process: firstly, acquiring a signal check table and an actual state table; for each group identification corresponding to the group in the signal checking table, the following processes are executed: searching whether the signal identifier of the feedthrough signal exists in an actual state table aiming at the signal identifier of the feedthrough signal traversed currently in the group; if the signal identification of the feedthrough signal exists in the actual state table, acquiring the signal identification and beat number of the feedthrough signal from the actual state table; if the feedthrough signal is the first signal in the group, judge whether include the sub dictionary that the group corresponds to in the general dictionary, if include the sub dictionary that the group corresponds to in the general dictionary, set up a sub dictionary based on group label of the group, insert into the general dictionary with the group label of the group as key value, key; and then writing the signal identification and the beat number of the feedthrough signal into the sub-dictionary. If the signal identification of the feedthrough signal does not exist in the actual state table, judging whether to traverse the last feedthrough signal in the group, if so, continuing to traverse the next group in the signal check table; and if the last feedthrough signal in the group is not traversed, continuing to traverse the signal identifier of the next feedthrough signal in the group, then continuing to execute the step of searching whether the signal identifier of the feedthrough signal exists or not from the actual state table aiming at the signal identifier of the currently traversed feedthrough signal in the group.
If the feedthrough signal is not the first signal in the packet, the dictionary generally includes the sub-dictionary of the packet, and the signal identifier and the beat number of the feedthrough signal are inserted into the sub-dictionary at this time. And then judging whether the feedthrough signal is the last signal in the packet, if so, continuing to traverse the next packet in the signal check table. And if the last feedthrough signal in the group is not traversed, continuing to traverse the signal identifier of the next feedthrough signal in the group, then continuing to execute the step of searching whether the signal identifier of the feedthrough signal exists or not from the actual state table aiming at the signal identifier of the currently traversed feedthrough signal in the group.
After traversing all the feedthrough signals in the packet, continuously traversing the packet corresponding to the next group identifier of the signal check table, and then continuously executing the above process, which is not described in detail herein.
After the feedthrough signals in all the groups are traversed, the general dictionary is built, and then the built general dictionary can be output.
It should be noted that, when writing the signal identifier and beat number of the feedthrough signal into the sub-dictionary, the following process can be performed: and creating a signal list for the beat number based on the beat number of the feedthrough signal, writing the signal identification into the signal list, using the beat number as a key of the sub-dictionary, and inserting the signal list into the sub-dictionary as a key value of the sub-dictionary. When inserting a signal identifier into a signal list, the signal identifier is generally inserted at the end of the signal list, and for example, when a signal identifier 1 was inserted into the signal list last time (the signal identifier 1 is the end of the signal list), a signal identifier 2 is inserted after the signal identifier 1 at the time of this insertion.
Based on this, the global dictionary can be quickly generated based on the signal check table and the actual state table. Referring to fig. 3, the large ellipse of fig. 3 represents a general dictionary, and the small ellipse is a sub-dictionary of each group; si marks the signal mark of the feedback signal; the number on the left side of the signal is the beat number of the feedthrough signal. The global dictionary of fig. 3 generated according to the above method includes, among others, a Group 1 and a Group 2, where the Group 1 is identified as Module _ a _ Group _1 and the Group 2 is identified as Module _ B _ Group _2. Note that, packet 1 corresponds to Module a (Module _ a), and packet 2 corresponds to Module B (Module _ B), where: the feedthrough signal included in packet 1 is: s1, S2, S3, S4, and S5, obtaining different beat numbers of the feedthrough signal in the group 1 based on the actual state table query, where the beat numbers of S1, S2, S3, and S4 are all 10, the beat number of S5 is 11, and the group 1 includes 2 sub-dictionaries in the total dictionary, as shown in fig. 3. And the feedthrough signal of the group 2 includes S6, S7 and S8, and the beat numbers of the feedthrough signal of the group 2 obtained by querying based on the actual state table are the same, and are all 36, so that the group 2 includes 1 sub-dictionary in the total dictionary, as also shown in fig. 3.
Step two: and for each group, searching the sub-dictionary corresponding to the group identification from the general dictionary according to the group identification of the group.
In this step, after the global dictionary is obtained, the global dictionary may be traversed for each group, and specifically, the global dictionary is searched by using the group of identifiers as the key to obtain the sub-dictionary corresponding to the group of identifiers.
Step three: and determining the beat number included in the searched sub-dictionary as the beat number of the feedthrough signal in the target group corresponding to the group identification.
In this step, after the sub-dictionary corresponding to the group identifier is obtained based on the second step, the keyword key may be obtained from the obtained sub-dictionary, and the obtained keyword key is the number of beats of the feedthrough signal included in the group corresponding to the group identifier. Alternatively, the beat number obtaining procedure may be performed, but not limited to, using a Python program, for example, using a dit.
Based on this, the beat number of the feedthrough signal in any packet can be obtained by traversing the global dictionary.
On this basis, the value (sub-dictionary) of each packet can be obtained based on the general dictionary, and for each packet, if the sub-dictionary of the packet is obtained based on the general dictionary, if the number of the extracted sub-dictionaries is greater than 1, that is, the number of the keywords key of the sub-dictionary is greater than 1, it indicates that the beat numbers of the feedthrough signals in the packet are inconsistent, that is, it indicates that the feedthrough signals reaching the destination module in the packet have a condition of inconsistent delay. Referring to fig. 3, the sub-dictionary of the Group 1 (Module _ a _ Group _ 1) is taken out from the general dictionary shown in fig. 3, it can be confirmed that the number of keys of the taken-out sub-dictionary is 2, and 2 is greater than 1, which indicates that there is a case that the delays of all the feedback signals in the Group 1 reaching the destination Module a are inconsistent, that is, it is confirmed that the consistency check of the feedback signals reaching the destination Module a in the Group 1 does not pass; similarly, it can be confirmed that the number of keys of the sub-dictionary of the packet 2 (Module _ B _ Group _ 2) in fig. 3 is 1, which indicates that there is no inconsistency in the delay of all the feedthrough signals in the packet 2 reaching the destination Module B, i.e. the delay is the same, i.e. the consistency check on the feedthrough signals in the packet 2 reaching the destination Module B passes. Therefore, the automatic inspection of the feedthrough signal of the chip is realized, and the chip and the signal with huge scale can be dealt with.
Optionally, the signal checking table provided in this embodiment further includes a delay checking condition that should be satisfied when the feedthrough signal is transmitted between the modules; the feedback signal in this embodiment also has a transmission function of the back-pressure signal, which is recorded as the back-pressure feedback signal, and in practical application, a time delay for transmitting the back-pressure feedback signal between the modules needs to be checked. Based on this principle, the feedthrough signal checking method provided by this embodiment further includes the flow shown in fig. 4:
s401, when the beat number of each fed through signal in the same group is confirmed to be the same, the beat number of the fed through signal passing through the corresponding module during transmission between the corresponding modules is obtained based on the time delay check condition.
In this step, after the consistency check of the feedthrough signal passing through each module passes, the time delay condition of the module transferring the back pressure feedthrough signal can be checked again. Specifically, when the user needs to check the time delay of the back-pressure feedthrough signal, based on this, the present embodiment proposes to add a time delay check condition to be checked in the signal check table, and certainly, a plurality of time delay check conditions may also be added, which may be determined specifically according to the actual situation.
It should be noted that if the consistency check of the feedthrough signal of each module in the chip fails, it indicates that the module itself has a problem in time delay, and the flow shown in fig. 4 does not need to be executed.
S402, judging whether the beat number of the corresponding grouping meets the time delay check condition when the feedthrough signal is transmitted between the modules; if the time delay check condition is satisfied, executing step S403; if the delay check condition is not satisfied, step S404 is executed.
In this step, since the number of beats of each feedthrough signal reaching each destination module is confirmed in step S202, then, based on the flow shown in fig. 2, the group identifiers corresponding to the destination modules having the same number of beats can be screened out and the group identifiers corresponding to the destination modules and the number of beats of each feedthrough signal reaching the destination module can be output, for example, written into a record file; then, according to the group identifiers related to the delay check conditions in the signal check table, extracting the beat numbers corresponding to the group identifiers from the record file, then judging whether the beat numbers corresponding to the group identifiers meet the delay check conditions, if so, confirming that the delay check of the fed through signal of the destination module corresponding to the group identifiers passes, and if all the beat numbers of the group identifiers related to the delay check conditions meet the respective delay check conditions, confirming that the delay check of the back-pressure fed through signal of the chip passes, namely, executing step S403. If the time delay check module does not satisfy any time delay check module, it is determined that the time delay check of the back voltage feedthrough signal of the chip does not pass, and step S404 is executed.
S403, confirming that the time delay check of the feedthrough signal of the chip is passed.
S404, confirming that the time delay check of the feedthrough signal of the chip does not pass.
By implementing the flow of fig. 4, the automatic detection of the time delay of the back-pressure feedthrough signal of the chip is realized, the large-scale chip and signal can be handled, the labor cost is greatly saved, and the problem of easy error caused by manual detection in the prior art is solved.
Optionally, when the delay check of the feedthru signal does not pass, the check result of the delay check that does not pass may be output and displayed, for example, the delay check condition of the delay check that does not pass, the group identifier related to the delay check condition, the signal identifier of the feedthru signal included in the group corresponding to the group identifier, and the number of beats thereof are output to a log file, so that a user may search for a module with an abnormality based on the log file for analysis and positioning.
Alternatively, step S401 may be executed according to the following procedure, that is, based on the delay check condition, obtaining the number of beats of the corresponding packet when the feedthrough signal is transmitted between the modules: acquiring a general dictionary; and acquiring the beat number corresponding to the group identifier matched with the time delay check condition from the general dictionary.
Specifically, the general dictionary comprises a plurality of sub-dictionaries taking the group identifier as a key value, and the sub-dictionary corresponding to the group identifier related to the delay check condition can be extracted from the general dictionary based on the group identifier related to the delay check condition; and then extracting the acquired key of each sub-dictionary, and recording the acquired key as the beating number of the group corresponding to the group identifier related to the time delay check condition. It should be noted that, the above general dictionary creation method refers to the above description about the general dictionary, and is not described in detail here.
On this basis, the determination of whether the beat number of the corresponding packet during the transmission of the feedthrough signal between the modules meets the delay check condition may be performed according to the following method: judging whether the obtained relation between the beat numbers meets the relation which the corresponding beat numbers of the group identification should meet; if the relation which the beat number corresponding to the group identification is satisfied is met, the time delay check condition is confirmed to be satisfied; and if the relation which the beating number corresponding to the group identification is not satisfied, confirming that the time delay checking condition is not satisfied.
Specifically, the delay check condition may be a relationship that the beat number corresponding to the group identifier should satisfy, and may be represented by an expression, for example, the following delay check condition: ICU _ Group _1+ RXIF _group _ _1< =45.
The expression indicates that the total number of beats of the fed through signal in the first Group (Group _ 1) of the ICU module and the fed through signal in the first Group (Group _ 1) of the RXIF module added together cannot exceed 45, that is, after the back pressure fed through signal passes through the ICU module and the RXIF module, the delayed clock period of the fed through signal cannot exceed 45 clock periods.
Based on this, with the above-mentioned delay check condition, it may be known that the Group identifiers to be obtained are ICU _ Group _1 and RXIF _ Group _1, and then a sub-dictionary matching the two Group identifiers may be obtained from the general dictionary based on the two Group identifiers; the obtained keyword key of the sub-dictionary is recorded as the beating number corresponding to the two Group identifications, for example, the number of beats of ICU _ Group _1 is 10,RXIF _group _1has a beat count of 20. <xnotran> , , ICU _ Group _1=10,RXIF_Group_1=20, , ICU _ Group _1+RXIF_Group_1=10+20=30<45, feedthrough ; </xnotran> Otherwise, confirming that the time delay check condition is not met.
It should be noted that, but not limited to, the method for checking the delay of the back pressure feedthrough signal may be executed by using a python program, where an eval () function is used to execute a string expression and return the value of the expression, so after a variable of the expression is defined, the judgment of the expression may be executed by using the eval () function, and the clock cycle indicating the delay of the first set of back pressure feedthrough signals is less than 45 clock cycles, indicating that the delay check of the back pressure feedthrough signal passes; <xnotran> ICU _ Group _1+RXIF_Group_2< =25 , RXIF _ Group _2=20, eval () , eval (ICU _ Group _1+RXIF_Group_2< = 25) False, feedthrough ICU RXIF , feedthrough 25 , feedthrough . </xnotran> Therefore, the time delay check of the back voltage feedback signal is realized.
Hereto, the inspection process of the feedthrogh signal of chip has been accomplished, realized that automatic feedthrogh signal itself has the problem of designing in the chip front end design process to inspect, like consistency inspection and the time delay inspection of feedthrogh signal, and can deal with large-scale chip and signal inspection, the problem of the easy mistake of manual check has been avoided, and can also export and demonstrate the inspection result, convenient show is for the user, like the developer, through exporting the inspection result in order to provide the information of taking place the mistake, make things convenient for the developer to fix a position the modification, it shows as follows the inspection result:
the fed through signal inspection program automatically inspects the signals, and counts that 9 groups of signals of the ilkn module are normal, and one group of signals with inconsistent beat numbers exists in two groups of signals of the net _ if _ port module, and outputs and displays detailed conditions of the signals. Therefore, the implementation of the fed through signal inspection method provided by the application can automatically realize consistency inspection and time delay inspection of the fed through signal, especially can deal with inspection of the fed through signal of a large-scale chip, not only solves the problems of low efficiency and easy error caused by manual inspection in the prior art, but also improves the inspection speed and accuracy of the fed through signal of the chip.
Based on the same inventive concept, the application also provides a message processing device corresponding to the message processing method. The implementation of the message processing apparatus may refer to the above description of the message processing method, and is not discussed here one by one.
Referring to fig. 5, fig. 5 is a feed-through signal inspection apparatus provided in an exemplary embodiment of the present application, including:
a first obtaining module 501, configured to obtain a signal check table of a feedthrough signal to be checked by a chip and an actual state table of the feedthrough signal obtained by the chip during simulation, where the signal check table includes a signal identifier of the feedthrough signal and a group identifier of a group to which the feedthrough signal belongs, the group identifier includes a module identifier of a destination module to which the feedthrough signal reaches, and the actual state table includes a signal identifier of each feedthrough signal and a beat number of the feedthrough signal reaching the destination module from a starting module;
a determining module 502, configured to determine, by using the signal check table and the actual state table, a beat number of each feedthrough signal in the same group;
a first determining module 503, configured to determine whether the beat numbers of the fed through signals in the same group are the same;
a confirming module 504, configured to confirm that the consistency check of the feedthrough signal of the chip passes if the determination result of the first determining module is the same; and if the judgment results of the first judgment module are different, confirming that the consistency check of the fed through signal of the chip does not pass.
Optionally, the signal checking table in this embodiment further includes a delay checking condition that should be satisfied when the feedthrough signal is transmitted between the modules; the feedthrough signal inspection device provided by this embodiment further includes:
a second obtaining module (not shown in the figure), configured to obtain, based on the delay check condition, a beat number of a corresponding packet when the feedthrough signals are transmitted between corresponding modules when it is determined that the beat numbers of the feedthrough signals in the same packet are the same;
a second determining module (not shown in the figure) for determining whether the obtained beat number of the corresponding packet meets the delay check condition;
a second confirming module (not shown in the figure), configured to confirm that the delay check of the feedthrough signal of the chip passes if the determination result of the second determining module (not shown in the figure) satisfies the delay check condition; if the determination result of the second determining module (not shown in the figure) is that the delay check condition is not satisfied, it is determined that the delay check of the feedthrough signal of the chip does not pass.
Optionally, the determining module 502 is specifically configured to:
acquiring a general dictionary, wherein the general dictionary is created according to group identifiers in the signal check table and the beating times of the fed through signals in the actual state table, the general dictionary comprises at least one sub dictionary, the number of the sub dictionaries is the same as that of the group identifiers in the signal check table, key words of the sub dictionaries are group identifiers, the group identifiers corresponding to different sub dictionaries are different, and each sub dictionary comprises the signal identifier of the fed through signal in a group corresponding to the group identifier and the beating times of the fed through signal;
for each group, according to the group identification of the group, searching a sub-dictionary corresponding to the group identification from the general dictionary;
and determining the beat number included in the searched sub-dictionary as the beat number of each feedthrough signal in the target group corresponding to the group identification.
Optionally, the delay check condition provided in this embodiment includes a relationship that the beat number corresponding to the group identifier should satisfy; then
The second obtaining module (not shown in the figure) is specifically configured to obtain a global dictionary, where the global dictionary is created according to the group identifiers in the signal check table and the beat numbers of the feedthrough signals in the actual state table, where the global dictionary includes at least one sub-dictionary, where the number of the sub-dictionaries is the same as the number of the group identifiers in the signal check table, a key of the sub-dictionary is a group identifier, group identifiers corresponding to different sub-dictionaries are different, and each sub-dictionary includes a signal identifier of a feedthrough signal in a group corresponding to the group identifier and a beat number of the feedthrough signal; and acquiring the beat number corresponding to the group identifier matched with the time delay check condition from the general dictionary.
The second determining module (not shown in the figure) is specifically configured to determine whether the relationship between the obtained beat numbers meets a relationship that the beat numbers corresponding to the group identifiers should meet;
the second determining module (not shown in the figure) is specifically configured to determine that the delay check condition is satisfied if a determination result of the second determining module (not shown in the figure) is that the relationship that the beat number corresponding to the group identifier should satisfy is satisfied; if the judgment result of the second judgment module (not shown in the figure) does not conform to the relationship that the beat number corresponding to the group identifier should satisfy, it is determined that the delay check condition is not satisfied.
The above-mentioned device that this embodiment provided, the actual state table that obtains when obtaining the signal check table of chip and chip simulation, the number of beats of each fed through signal in confirming same grouping, then whether the number of beats of each fed through signal through comparing this grouping is the same, confirm whether the time delay of each fed through signal is the same after each fed through signal in this grouping reachs the destination module, thereby the automatic uniformity inspection to the fed through signal of chip that has realized has been solved among the prior art and has been examined the big and easy problem of makeing mistakes of work load that the fed through signal brought, adopt the method that this application provided, not only the inspection is high-efficient and the degree of accuracy is high, manpower resources have been saved greatly.
Based on the same inventive concept, an electronic device according to an embodiment of the present application is provided, as shown in fig. 6, and includes a processor 601 and a machine-readable storage medium 602, where the machine-readable storage medium 602 stores a computer program capable of being executed by the processor 601, and the processor 601 is caused by the computer program to execute the feed-through signal checking method according to any embodiment of the present application.
The computer-readable storage medium may include a RAM (Random Access Memory), a DDR SRAM (Double Data Rate Synchronous Dynamic Random Access Memory), and may also include a NVM (Non-volatile Memory), such as at least one disk Memory. Alternatively, the computer readable storage medium may be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
In addition, the present application provides a machine-readable storage medium, which stores a computer program, and when the computer program is called and executed by a processor, the computer program causes the processor to execute the feed-through method provided in any embodiment of the present application.
For the embodiments of the electronic device and the machine-readable storage medium, since the contents of the related methods are substantially similar to those of the foregoing embodiments of the methods, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the embodiments of the methods.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The implementation process of the functions and actions of each unit/module in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, wherein the units/modules described as separate parts may or may not be physically separate, and the parts displayed as units/modules may or may not be physical units/modules, may be located in one place, or may be distributed on a plurality of network units/modules. Some or all of the units/modules can be selected according to actual needs to achieve the purpose of the solution of the present application. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (10)
1. A method of inspecting a feed-through signal, comprising:
acquiring a signal check table of a feedthrough signal to be checked by a chip and an actual state table of the feedthrough signal acquired by the chip during simulation, wherein the signal check table comprises a signal identifier of the feedthrough signal and a group identifier of a group to which the feedthrough signal belongs, the group identifier comprises a module identifier of a destination module to which the feedthrough signal reaches, and the actual state table comprises a signal identifier of each feedthrough signal and the beat number of the feedthrough signal reaching the destination module from the starting module;
determining the beat number of each feedthrough signal in the same group by using the signal check table and the actual state table;
judging whether the beat number of each fed through signal in the same group is the same or not;
if the chip is the same as the feed through signal, the consistency check of the feed through signal of the chip is confirmed to be passed;
and if not, confirming that the consistency check of the fed through signal of the chip does not pass.
2. The method of claim 1, wherein the signal checking table further comprises a delay checking condition that should be satisfied when the feedthrough signal is transmitted between the modules; the method further comprises:
when the beat number of each fed through signal in the same group is the same, obtaining the beat number of the corresponding group when the fed through signals are transmitted between the modules based on the time delay check condition;
judging whether the acquired beat number of the corresponding packet meets the time delay check condition or not;
if the time delay checking condition is met, confirming that the time delay checking of the feedback signal of the chip is passed;
and if the time delay check condition is not met, confirming that the time delay check of the feedback signal of the chip does not pass.
3. The method of claim 1, wherein determining the number of beats of each feedthrough signal in the same packet using the signal check table and the actual state table comprises:
acquiring a general dictionary, wherein the general dictionary is created according to group identifiers in the signal check table and the beating times of the fed through signals in the actual state table, the general dictionary comprises at least one sub dictionary, the number of the sub dictionaries is the same as that of the group identifiers in the signal check table, key words of the sub dictionaries are group identifiers, the group identifiers corresponding to different sub dictionaries are different, and each sub dictionary comprises the signal identifier of the fed through signal in a group corresponding to the group identifier and the beating times of the fed through signal;
for each group, according to the group identification of the group, searching a sub-dictionary corresponding to the group identification from the general dictionary;
and determining the beat number included in the searched sub-dictionary as the beat number of each feedthrough signal in the group corresponding to the group identification.
4. The method according to claim 2, wherein the delay check condition includes a relationship that the number of beats corresponding to the group identifier should satisfy;
obtaining the beat number of the corresponding grouping of the feedthrough signal when the feedthrough signal is transmitted between the modules based on the time delay checking condition, which comprises the following steps:
acquiring a general dictionary, wherein the general dictionary is created according to group identifiers in the signal check table and the beating times of the fed through signals in the actual state table, the general dictionary comprises at least one sub dictionary, the number of the sub dictionaries is the same as that of the group identifiers in the signal check table, key words of the sub dictionaries are group identifiers, the group identifiers corresponding to different sub dictionaries are different, and each sub dictionary comprises the signal identifier of the fed through signal in a group corresponding to the group identifier and the beating times of the fed through signal;
and acquiring the beat number corresponding to the group identifier matched with the time delay check condition from the general dictionary.
5. The method according to claim 4, wherein determining whether the number of beats of the acquired corresponding packet satisfies the delay check condition includes:
judging whether the obtained relation between the beat numbers meets the relation which the corresponding beat numbers of the group identification should meet;
if the relation which the beat number corresponding to the group identification is satisfied is met, the time delay check condition is confirmed to be satisfied;
and if the relation which the beating number corresponding to the group identification is not satisfied, confirming that the time delay checking condition is not satisfied.
6. A feedthru signal inspection device, comprising:
the device comprises a first obtaining module, a second obtaining module and a third obtaining module, wherein the first obtaining module is used for obtaining a signal check table of a feedthrough signal to be checked by a chip and an actual state table of the feedthrough signal obtained by the chip during simulation, the signal check table comprises a signal identifier of the feedthrough signal and a group identifier of a group to which the feedthrough signal belongs, the group identifier comprises a module identifier of a destination module to which the feedthrough signal reaches, and the actual state table comprises a signal identifier of each feedthrough signal and a beat number of the feedthrough signal from a starting module to the destination module;
the determining module is used for determining the beat number of each feedback signal in the same group by using the signal check table and the actual state table;
the first judging module is used for judging whether the beat number of each fed through signal in the same group is the same or not;
the confirming module is used for confirming that the consistency check of the feedthrough signal of the chip passes if the judging result of the first judging module is the same; and if the judgment results of the first judgment module are different, confirming that the consistency check of the feedthrough signal of the chip does not pass.
7. The apparatus of claim 6, wherein the signal checking table further comprises a delay checking condition that should be satisfied when a feedthrough signal is transmitted between modules; the apparatus further comprises:
the second obtaining module is used for obtaining the beat number of the corresponding grouping when the feedthrough signals are transmitted between the corresponding modules based on the time delay checking condition when the beat number of each feedthrough signal in the same grouping is confirmed to be the same;
the second judgment module is used for judging whether the obtained beat number of the corresponding packet meets the time delay check condition or not;
the second confirming module is used for confirming that the time delay check of the feedback signal of the chip is passed if the judgment result of the second judging module is that the time delay check condition is met; and if the judgment result of the second judgment module is that the time delay check condition is not met, determining that the time delay check of the feedthrough signal of the chip does not pass.
8. The apparatus of claim 6, wherein the determining module is specifically configured to:
acquiring a general dictionary, wherein the general dictionary is created according to group identifiers in the signal check table and the beating times of the fed through signals in the actual state table, the general dictionary comprises at least one sub dictionary, the number of the sub dictionaries is the same as that of the group identifiers in the signal check table, key words of the sub dictionaries are group identifiers, the group identifiers corresponding to different sub dictionaries are different, and each sub dictionary comprises the signal identifier of the fed through signal in a group corresponding to the group identifier and the beating times of the fed through signal;
for each group, according to the group identification of the group, searching a sub-dictionary corresponding to the group identification from the general dictionary;
and determining the beat number included in the searched sub-dictionary as the beat number of each feedthrough signal in the group corresponding to the group identification.
9. The apparatus according to claim 7, wherein the delay check condition includes a relationship that the number of beats corresponding to the group identifier should satisfy; then
The second obtaining module is specifically configured to: acquiring a general dictionary, wherein the general dictionary is created according to group identifiers in the signal check table and the beating times of the fed through signals in the actual state table, the general dictionary comprises at least one sub dictionary, the number of the sub dictionaries is the same as that of the group identifiers in the signal check table, key words of the sub dictionaries are group identifiers, the group identifiers corresponding to different sub dictionaries are different, and each sub dictionary comprises the signal identifier of the fed through signal in a group corresponding to the group identifier and the beating times of the fed through signal; and acquiring the beat number corresponding to the group identifier matched with the time delay check condition from the general dictionary.
10. The apparatus of claim 9,
the second judging module is specifically configured to judge whether the obtained relationship between the beat numbers meets a relationship that the beat numbers corresponding to the group identifiers should meet;
the second determining module is specifically configured to determine that the delay check condition is satisfied if a determination result of the second determining module matches a relationship that the number of beats corresponding to the group identifier should satisfy; and if the judgment result of the second judgment module is that the relation which is not satisfied by the beating number corresponding to the group identification is not satisfied, confirming that the time delay check condition is not satisfied.
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