CN117009185A - Bus monitoring method, device, system on chip and equipment - Google Patents

Abstract

This application provides a bus monitoring method, device, on-chip system and equipment, which are applied in the field of computer technology. The method is applied to an on-chip system including a control unit and a bus monitoring unit. The control unit outputs a gating instruction, and the bus monitoring unit outputs a gating instruction according to the gating. The instruction determines a target bus to be monitored in the multi-channel bus and obtains the target bus signal of the target bus. This method only monitors one target bus in the multi-channel bus, unlike the existing technology that monitors all buses of the multi-channel bus inside the chip. Compared with the method of monitoring information, it can effectively reduce the data volume of bus information, thereby reducing the logic overhead of bus monitoring and the power consumption of the bus monitoring unit, thereby meeting actual bus monitoring needs.

Description

A bus monitoring method, device, on-chip system and equipment

Technical field

This application relates to the field of computer technology, and specifically to a bus monitoring method, device, on-chip system and equipment.

Background technique

Figure 1 shows a schematic structural diagram of a typical SoC (System on Chip) chip in the prior art. The SoC chip includes a processor 101 and multiple functional units, such as a storage controller 102 and a peripheral controller 103. And the multimedia controller 104, each unit is connected through a bus 105. The processor 101 can communicate with each functional unit and each functional unit with each other through the bus 105 .

As the integration level of SoC chips continues to increase, the demand for monitoring the bus within the chip is becoming stronger and stronger. Therefore, how to obtain the bus signals during the bus communication process within the chip to monitor the bus has become an urgent need for those skilled in the field. Technical issues resolved.

Contents of the invention

In view of this, this application is committed to providing a bus monitoring method, device, on-chip system and equipment, which can obtain the bus signal during the bus communication process, and thereby realize the monitoring of the bus.

In a first aspect, this application provides a bus monitoring method, which is applied to a system-on-chip. The system-on-chip includes a control unit and a bus monitoring unit. The method includes the following steps performed by the bus monitoring unit: receiving the control unit The gating instruction is sent, and the gating instruction is used to indicate the target bus that needs to be monitored in the multi-channel bus; according to the gating instruction, a target bus to be monitored in the multi-channel bus is determined, and the target of the target bus is obtained. bus signal.

Based on the above content, through the bus monitoring method provided by this application, the control unit outputs the gating instruction, and the bus monitoring unit determines a target bus to be monitored in the multi-channel bus according to the gating instruction and obtains the target bus signal of the target bus. This method only monitors one target bus in the multi-channel bus. Compared with the existing method of monitoring all bus information of the multi-channel bus inside the chip, this method can effectively reduce the data amount of bus information, thereby reducing bus monitoring. The logic overhead and the power consumption of the bus monitoring unit are reduced to meet the actual bus monitoring needs.

In a possible implementation, the bus monitoring method provided by the first aspect of the present invention also includes: receiving a monitoring enable instruction sent by the control unit; in response to the monitoring enable instruction, parsing the target bus signal to obtain A bus request is made, and target bus information in the bus request is extracted; target data in the target bus information is extracted according to preset tracking conditions.

In this application, the bus monitoring unit initially extracts the bus request and obtains the target bus information. After extracting the target bus information, it further extracts the target data required for bus monitoring based on the preset tracking conditions. After the above two data filtering selections , the data volume of the obtained target data can be much smaller than the total data volume requested by the bus. Compared with the method of obtaining all bus information for monitoring in the existing technology, the data volume of the bus information can be effectively reduced, thereby reducing the logic overhead of bus monitoring. In addition, the acquisition of target bus information is controlled by the monitoring enable command. The target bus information is not acquired at all times. The running time of the bus monitoring unit can be controlled through the monitoring enable command, which helps to reduce the power consumption of the bus monitoring unit and thus meets the actual needs. bus monitoring requirements.

In a possible implementation, extracting the target bus information in the bus request includes: determining whether the bus request complies with the bus protocol supported by the target bus; if the bus request complies with the bus protocol supported by the target bus, The supported bus protocol extracts the target bus information in the bus request according to the preset filtering conditions; wherein the preset filtering conditions are based on the data volume of the bus request, the address corresponding to the bus request, and the identification mark corresponding to the bus request. At least one setting.

In this application, combined with the actual monitoring needs, an optional setting method of preset filtering conditions is provided. At the same time, before extracting the target bus information, it is judged whether the bus request conforms to the bus protocol supported by the target bus. Only when the bus request conforms to the target bus Only when the bus protocol is supported by the target bus, the target bus information will be further extracted according to the preset filtering conditions. Based on this, bus requests that do not comply with the bus protocol supported by the target bus can be effectively filtered. At the same time, combined with the preset filtering conditions, the target bus information will be extracted. The target bus information in the bus request of the bus protocol supported by the target bus is extracted, so that the final target bus information is not only effective but also has a small amount of data, which can effectively reduce the data amount of the bus information, thereby reducing the logic overhead of bus monitoring.

In a possible implementation, extracting target data in the target bus information according to preset tracking conditions includes: determining whether the target bus information includes indication information indicating that the target bus information is valid; if Including the instruction information, the target data in the target bus information is extracted according to the preset tracking conditions.

In this application, it is further judged whether the target bus information is valid. Only when the target bus information is valid, the target data will be extracted according to the preset tracking conditions, which can ensure the validity of the extracted target data and thereby improve bus monitoring. The credibility of the results.

In a possible implementation, before extracting the target data in the target bus information according to the preset tracking conditions, the method further includes: obtaining transaction characteristics, and setting the preset tracing conditions based on the transaction characteristics. ; Wherein, the transaction characteristics include at least one of the address of the bus request, the identification of the bus request, the data content in the bus information, and the response content of the bus request.

In the monitoring method provided by this application, transaction characteristics can be selected according to actual monitoring requirements, and then the aforementioned preset tracking conditions can be set based on the transaction characteristics to ensure that the target data extracted according to the preset tracking conditions meets the actual needs of bus monitoring. At the same time, it can also Screening and filtering target data through preset tracking conditions helps reduce the amount of target data, thereby reducing the logic overhead of bus monitoring and improving monitoring efficiency.

In a possible implementation, the bus monitoring method provided by the first aspect of the present invention further includes: receiving a storage instruction sent by the control unit; wherein the storage instruction is used to instruct the target data to be stored in the target storage. Space, the target storage space includes a storage space inside the system-on-chip or a storage space outside the system-on-chip; based on the storage instruction, the target data is stored in the target storage space.

In this application, a variety of storage options are provided. The storage space to store the target data can be selected according to the storage instruction. When the amount of target data is small, the target data can be stored in the storage space inside the on-chip system, which is consistent with the current situation. Compared with the existing technology that simply stores bus information in the external storage space of the on-chip system, since the clock frequency of the internal storage space of the on-chip system can basically be synchronized with the clock frequency of the target bus, it can effectively avoid the overflow of target data and ensure that the data Integrity; when the internal storage space of the system-on-chip is exhausted, the target data can also be directly stored in the storage space outside the system-on-chip, thereby realizing the storage of massive data and effectively avoiding the loss and omission of target data.

In a possible implementation, obtaining the target bus signal of the target bus includes: performing clock synchronization processing on the bus signals of each of the buses to obtain corresponding synchronization synchronized with the clock frequency of the bus monitoring unit. Bus signal; obtain the synchronous bus signal of the target bus indicated by the strobe instruction to obtain the target bus signal.

In the monitoring method provided by this application, clock synchronization processing is performed on the bus signals of each bus, and the target bus signal is obtained from each synchronous bus signal synchronized with the clock frequency of the bus monitoring unit according to the gating instruction, which can be timely and synchronized. The changes of the bus signal of the target bus are collected to avoid the loss of bus information.

In a possible implementation, the bus monitoring method provided by the first aspect of the present invention also includes: counting reference information used to characterize the operating performance of the target bus in the target bus information, where the reference information includes various types of requests At least one of the number of and the length of delay between bus requests.

In the monitoring method provided by this application, the reference information that characterizes the operating performance of the target bus is statistically analyzed. Based on the obtained reference information, the operating performance of the target bus can be analyzed, providing a reference basis for improving the information transmission efficiency of the target bus and the operating performance of the entire on-chip system.

In a possible implementation, counting the reference information used to characterize the operating performance of the target bus in the target bus information includes: responding to a statistics enable instruction, collecting multiple target bus information extracted within a preset time period. Reference information in the statistics.

In this application, the acquisition time of the reference information is limited, and the data amount of the reference information can be selected by setting the preset time to meet different bus monitoring needs.

In a possible implementation, the counting of reference information in a plurality of target bus information extracted within a preset time period includes: respectively determining whether each of the target bus information extracted within the preset time period is Including indication information indicating that the target bus information is valid; and performing statistics on reference information in the target bus information including the indication information.

In this application, before extracting reference information, it is judged whether the target bus information is valid, and the interference of invalid bus information is effectively filtered to ensure that the extracted reference information comes from valid target bus information, and the credibility of the reference information is High, which helps to improve the accuracy of bus performance analysis results.

In a second aspect, the present invention provides a bus monitoring method, which is applied to an on-chip system. The on-chip system includes a control unit and a bus monitoring unit. The bus monitoring method includes the following steps performed by the control unit: sending a strobe instruction. , the strobe instruction is used to instruct the bus monitoring unit to determine a target bus to be monitored in the multi-channel bus, and obtain the target bus signal of the target bus.

In this application, the control unit outputs the gating instruction, and the bus monitoring unit determines a target bus to be monitored in the multi-channel bus according to the gating instruction and obtains the target bus signal of the target bus. This method only detects one target bus in the multi-channel bus. Compared with the existing method of monitoring all the bus information of the multi-channel bus inside the chip, the data volume of the bus information can be effectively reduced, thereby reducing the logic overhead of bus monitoring and the power consumption of the bus monitoring unit. To meet actual bus monitoring needs.

In a possible implementation, the bus monitoring method provided in the second aspect of this application further includes: sending a monitoring enable instruction, the monitoring enable instruction being used to control the bus monitoring unit to parse the target bus signal to obtain the bus request, extract the target bus information in the bus request, and extract the target data in the target bus information according to the preset tracking conditions.

In this application, the bus monitoring unit initially extracts the bus request and obtains the target bus information. After extracting the target bus information, it further extracts the target data required for bus monitoring based on the preset tracking conditions. After the above two data filtering selections , the data volume of the obtained target data can be much smaller than the total data volume requested by the bus. Compared with the method of obtaining all bus information for monitoring in the existing technology, the data volume of the bus information can be effectively reduced, thereby reducing the logic overhead of bus monitoring. In addition, the specific implementation process of controlling the bus monitoring unit to extract target data through the monitoring enable command is not to obtain the target bus information at all times. It can control the running time of the bus monitoring unit, which helps to reduce the power consumption of the bus monitoring unit and thus meets the actual requirements. Bus monitoring requirements.

In a possible implementation, the bus monitoring method provided in the second aspect of this application further includes: sending transaction characteristics so that the bus monitoring unit sets the preset tracking conditions based on the transaction characteristics; wherein, The transaction characteristics include at least one of the requested address, the requested identification, the data content in the bus information, and the requested response content.

In the monitoring method provided by this application, the control unit sends transaction characteristics to the bus monitoring unit according to the actual monitoring requirements. The bus monitoring unit sets the aforementioned preset tracking conditions in combination with the transaction characteristics to ensure that the target data extracted according to the preset tracking conditions meets the bus monitoring requirements. According to actual needs, at the same time, target data can also be screened and filtered through preset tracking conditions, which helps to reduce the amount of target data, thereby reducing the logic overhead of bus monitoring and improving monitoring efficiency.

In a possible implementation, the bus monitoring method provided in the second aspect of this application further includes: sending a storage instruction, the storage instruction being used to instruct the bus monitoring unit to store the target data into the on-chip system. storage space or storage space external to the system-on-chip.

In this application, the control unit realizes the selection of the storage space of the target data through storage instructions, making the storage of the target data more flexible and able to meet different data storage needs. When the amount of target data is small, the target data can be stored The target data is stored in the internal storage space of the on-chip system. Compared with the existing technology that simply stores bus information in the external storage space of the on-chip system, the clock frequency of the internal storage space of the on-chip system can basically be the same as the clock frequency of the target bus. Maintaining synchronization can effectively avoid overflow of target data and ensure data integrity; when the amount of target data is large, the target data can also be directly stored in the storage space outside the on-chip system, thereby realizing massive data storage. Storage, effectively avoiding the loss and omission of target data.

In a possible implementation, the bus monitoring method provided in the second aspect of the present application further includes: sending a statistics enable instruction, the statistics enable instruction being used to control the bus monitoring unit to count the target bus information. Reference information used to characterize the operating performance of the target bus.

In this application, the control unit controls the operation of the bus monitoring unit through statistical enable instructions, obtains reference information when it is necessary to analyze the bus operation performance, and provides a reference basis for improving the information transmission efficiency of the target bus and the operation performance of the entire on-chip system. .

In a possible implementation, the bus monitoring unit is provided with a clock control unit for controlling clock signals. The bus monitoring method provided in the second aspect of this application also includes: when no bus is monitored, control The clock control unit turns off the clock signal of the bus monitoring unit.

In this application, the control unit controls the operating status of the clock unit in the bus monitoring unit. When no bus is required to be monitored, the control unit controls the clock unit to be closed, and each component unit in the bus monitoring unit stops running, and then It can effectively reduce the overall power consumption of the bus monitoring unit.

In a third aspect, the present invention provides a bus monitoring unit applied to an on-chip system. The on-chip system includes a control unit and the bus monitoring unit, wherein the bus monitoring unit executes any one of the steps of the first aspect of the present invention. The bus monitoring method described above.

In a fourth aspect, the present invention provides a control unit applied to a system-on-chip. The system-on-chip includes a bus monitoring unit and the control unit, wherein the control unit executes any one of the steps described in the second aspect of the present invention. Bus monitoring methods.

In a fifth aspect, the present invention provides a system on a chip, including: a processor, a bus, at least one functional unit, a control unit as described in the fourth aspect of the present invention, and a bus monitoring unit as described in the third aspect of the present invention, wherein , the processor is communicatively connected to each of the functional units through the bus; the bus monitoring unit is connected to the control unit and the bus respectively.

In a sixth aspect, the present invention provides a computer device, including the system-on-chip according to the fifth aspect of the present invention.

Description of the drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are: For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a SoC chip in the prior art.

FIG. 2 is a schematic structural diagram of a system-on-chip provided by an embodiment of the present invention.

Figure 3 is a schematic flow chart of a bus monitoring method provided by an embodiment of the present invention.

Figure 4 is a schematic flow chart of another bus monitoring method provided by an embodiment of the present invention.

FIG. 5 is a schematic flowchart of yet another bus monitoring method provided by an embodiment of the present invention.

FIG. 6 is a schematic flowchart of another bus monitoring method provided by an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of another system-on-chip provided by an embodiment of the present invention.

FIG. 8 is a schematic structural diagram of yet another system-on-chip provided by an embodiment of the present invention.

FIG. 9 is a schematic structural diagram of another system-on-chip provided by an embodiment of the present invention.

FIG. 10 is a schematic structural diagram of another system-on-chip provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

System on Chip (SoC) refers to an integrated circuit that integrates a complete computer system on a chip. A system-on-chip usually includes a processor, bus, input and output interfaces, and multiple functional modules to implement an independent functional system. Among them, the functional modules in the system-on-chip include but are not limited to storage controllers, peripheral controllers, and multimedia controllers. .

Figure 1 shows a schematic structural diagram of a typical system-on-chip in the prior art. The system includes a processor 101 and multiple functional units, such as a storage controller 102, a peripheral controller 103 and a multimedia controller 104. Each unit are connected via bus 105. The processor 101 can communicate with each functional unit and each functional unit with each other through the bus 105 .

System-on-chip functionality can be customized and expanded based on application needs. Different application fields, such as mobile devices, embedded systems, Internet of Things, network equipment, etc., have different functional and performance requirements for on-chip systems. Therefore, on-chip systems can be personalized and optimized according to application requirements to meet different application scenarios. The development of computer technology and practical application requirements have jointly promoted the continuous improvement of the integration of on-chip systems. The amount of information transmitted through the bus between the various components in the chip has increased rapidly, and the bus system and each component can be understood in time through the bus signals. The operation of the unit or even the entire system-on-chip is of great significance to practical work such as optimizing system-on-chip design and troubleshooting.

Therefore, how to obtain the bus signal during the bus communication process within the chip to monitor the bus has become an urgent technical problem that needs to be solved by those skilled in the art.

To solve this problem, the present invention provides an on-chip system. As shown in FIG. 2 , the on-chip system provided by the present invention includes: a processor 101, a bus 105, and at least one functional unit (shown in the figure as a memory controller 102, a peripheral The controller 103 and the multimedia controller 104 are shown as examples), the control unit 201 and the bus monitoring unit 202 . The processor 101 communicates with each functional unit through the bus 105, and each functional unit can also communicate with each other through the bus 105 according to its own communication requirements.

It should be noted that the bus 105 shown in Figure 2 is only a simple illustration of the connection relationship between the processor 101 and each functional unit, and is not the actual layout of the internal bus 105 of the on-chip system. In practical applications, the internal bus of the on-chip system includes multiple The bus type can also include multiple types. The internal communication network of the on-chip system is built through different types of multi-channel buses to realize the information transfer within the system. For the specific layout of the internal bus of the on-chip system, it can be implemented with reference to related technologies and will not be repeated here.

Further, the bus monitoring unit 202 is connected to the control unit 201 and the bus 105 respectively. As mentioned above, the bus 105 includes multiple buses. Therefore, in practical applications, the bus monitoring unit 202 is connected to each bus inside the on-chip system. It should be noted that the connection between the bus monitoring unit 202 and the bus mentioned in this embodiment and subsequent embodiments mainly refers to the establishment of a physical connection between the two. As for which bus signal the bus monitoring unit 202 specifically acquires, that is, Which bus to monitor needs to be determined based on actual monitoring requirements.

Based on the above system configuration, the control unit 201 outputs a gating instruction, and the bus monitoring unit 202 determines a target bus that needs to be monitored in the multi-channel bus according to the gating instruction and obtains the target bus signal of the target bus. This system only monitors one target bus in the multi-channel bus. Compared with the existing method of monitoring all bus information of the multi-channel bus inside the chip, this system can effectively reduce the data volume of the bus information, thereby reducing the bus monitoring The logic overhead and the power consumption of the bus monitoring unit meet the actual bus monitoring needs.

Further, the present invention provides a bus monitoring method, which is applied to the system-on-chip provided in the above embodiment. As shown in FIG. 3 , the flow of the bus monitoring method provided in this embodiment may include the following steps.

S100. The control unit sends a strobe command.

As mentioned above, the bus monitoring unit is connected to each bus in the on-chip system, and the strobe instruction is used to indicate a target bus that needs to be monitored among the multiple buses. The target bus can be any one of the buses. The present invention There is no restriction on the selection of the target bus, and it can be determined in combination with actual monitoring requirements in actual applications.

In a possible implementation, the control unit is provided with multiple registers, and the output signal line of each register is connected to the bus monitoring unit as a communication interface of the control unit. The control unit can implement control instructions such as strobe instructions by configuring each register. and the output of other configuration information.

S110. The bus monitoring unit receives the strobe instruction.

The bus monitoring unit is connected to the communication interface of the control unit and receives the strobe instructions output by the control unit according to a predefined communication protocol with the control unit. The selection of the communication protocol between the bus monitoring unit and the control unit can be implemented with reference to related technologies, and the present invention does not limit this.

S120. The bus monitoring unit determines a target bus to be monitored in the multi-channel bus according to the strobe instruction, and obtains the target bus signal of the target bus.

In a possible implementation, the bus monitoring unit includes a selection synchronization unit. The selection synchronization unit can be further divided into a selection unit and a synchronization unit. The synchronization unit inputs the bus signals of each bus and separates the bus signals from each bus. Synchronize the clock domain corresponding to each bus signal to the clock domain where the bus monitoring unit is located to obtain the synchronous bus signal. The selection unit determines the target bus that needs to be monitored in the multi-channel bus according to the gating instruction, and further selects the synchronization of the target bus. Bus signal to get the target bus signal.

Specifically, after the synchronization unit inputs the bus signals of each bus, the cross-clock domain synchronization processing of any bus signal can be divided into two situations: one is that the clock domain where the bus is located is consistent with the clock domain where the bus monitoring unit is located, that is, The clock frequency of the bus is the same as the clock frequency of the bus monitoring unit. In this case, the synchronization unit can be built with two-level registers to form a two-level synchronization unit, and each bus signal in the bus is input to the data of the two-level synchronization unit. At the input end, the synchronization bus signal is finally output from the output end of the synchronization unit. Another situation is that the clock domain clock where the bus is located is slower than the clock domain clock where the bus monitoring unit is located, that is, the clock frequency of the bus is lower than the clock frequency of the bus monitoring unit. In this case, the synchronization unit can be based on Gray code asynchronous first-in-first-out buffer (First In First Out, FIFO) for synchronization. As for the specific implementation of the two-level synchronization unit and the asynchronous first-in-first-out buffer based on Gray code mentioned in the above content, please refer to the relevant technology and will not be detailed here.

In practical applications, the clock frequency of the bus monitoring unit should be greater than or equal to the clock frequency of each bus in the on-chip system to ensure that changes in the bus signal can be sampled and that the bus signal is not lost.

The selection unit includes multiple signal input terminals and one signal output terminal. At most, only one signal input terminal is connected to the signal output terminal at the same time. In practical applications, the signal input end of the selection unit is connected to the output end of the synchronization unit to receive the synchronization bus signals of each bus. Of course, the synchronization bus signals received by each signal input end of the selection unit are different from each other. After receiving the gating instruction, the selection unit determines a target bus that needs to be monitored according to the gating instruction, and controls the signal input terminal corresponding to the target bus to connect with the signal output terminal, thereby realizing the collection of the synchronous bus signal of the target bus, and obtains Target bus signal. Of course, without receiving the strobe command, any signal input terminal is not connected to the signal output terminal.

In a possible implementation, the selection unit can be implemented based on a multiplexer (MUX). Each bus within the on-chip system is connected to each input terminal of the MUX. Of course, the MUX connected to each bus The input terminals are different from each other, and the output terminal of the MUX is connected to the input terminal of the synchronization unit. The MUX can establish a connection between the input terminal and the output terminal connected to the target bus according to the strobe instruction, thereby establishing a communication connection with the target bus.

To sum up, in the bus monitoring method provided by this embodiment, the control unit outputs the gating instruction, and the bus monitoring unit determines a target bus to be monitored in the multi-channel bus according to the gating instruction and obtains the target bus signal of the target bus. This method only monitors one target bus in the multi-channel bus. Compared with the existing method of monitoring all bus information of the multi-channel bus inside the chip, this method can effectively reduce the data amount of bus information, thereby reducing bus monitoring. The logic overhead and the power consumption of the bus monitoring unit are reduced to meet the actual bus monitoring needs.

Moreover, in practical applications, the target bus can be selected through strobe instructions and a certain bus can be monitored in a targeted manner, thereby focusing on important buses in the on-chip system.

Furthermore, an embodiment of the present invention provides another bus monitoring method. As shown in FIG. 4 , the bus monitoring method provided by this embodiment also includes the following steps based on the embodiment shown in FIG. 3 .

S130. The control unit sends a monitoring enable command.

In this embodiment, the monitoring enable instruction is mainly used to control the bus monitoring unit to perform subsequent steps S150 and S160, that is, to control the bus monitoring unit to extract target data. The specific form of the monitoring enable command can be implemented with reference to related technologies. The present invention is not limited to this. As for the specific sending process of the monitoring enable command, it can be implemented with reference to the relevant content of S100 sending the strobe command in the embodiment shown in Figure 3. It will not be repeated here.

S140. The bus monitoring unit receives the monitoring enable command.

The specific implementation of the bus monitoring unit receiving the monitoring enable command can be implemented with reference to the relevant content of S110 in the embodiment shown in FIG. 3, which will not be repeated here.

S150. The bus monitoring unit analyzes the target bus signal to obtain the bus request, and extracts the target bus information in the bus request.

Combined with the basic principle of transmitting bus information through the internal bus of the on-chip system, it can be seen that the target bus signal obtained by the bus monitoring unit is a digital signal arranged according to the relevant definitions of the communication protocol of the target bus. The bus monitoring unit needs to follow the communication protocol of the target bus to obtain the target. Only by parsing the bus signal can the corresponding bus request be obtained. The specific implementation of parsing the target bus signal to obtain the bus request can be combined with the specific content of the communication protocol of the target bus and the related technical implementation of bus signal parsing, which will not be described in detail here.

After getting the bus request, the bus monitoring unit further extracts the target bus information in the bus request. Specifically, the bus monitoring unit first determines whether the bus request conforms to the bus protocol supported by the target bus. If the resulting bus request conforms to the bus protocol supported by the target bus, it extracts the target bus information in the bus request according to the preset filtering conditions. On the contrary , if the resulting bus request does not comply with the bus protocol supported by the target bus, the bus request is discarded and no further processing is performed on it.

It can be seen from the above processing that in actual applications, actual monitoring requirements can be combined to determine whether the bus request conforms to the bus protocol supported by the target bus before extracting the target bus information. Only when the bus request conforms to the bus protocol supported by the target bus, In this case, the target bus information will be further extracted according to the preset filtering conditions. Based on this, bus requests that do not comply with the bus protocols supported by the target bus can be effectively filtered. At the same time, combined with the preset filtering conditions, bus requests that meet the bus protocols supported by the target bus can be effectively filtered. The target bus information in the bus request of the protocol is extracted, so that the final target bus information is not only effective but also has a small amount of data, which can effectively reduce the data amount of the bus information, thereby reducing the logic overhead of bus monitoring.

In a possible implementation, the preset filtering conditions can be set based on at least one of the data amount of the bus request, the address corresponding to the bus request, and the identification corresponding to the bus request (such as the number of the bus request). In practical applications , the preset filtering condition can be a single specified value of at least one of the data volume of the bus request, the address corresponding to the bus request, and the identification mark corresponding to the bus request, or it can be based on the data volume of the bus request, the address corresponding to the bus request and the filtering range set by at least one of the identification tags corresponding to the bus request. For example, set the address corresponding to the bus request. During the bus monitoring process, only the bus information requested by the bus request of this address is extracted. Another example is to set the data volume range of the bus request and extract the bus whose data volume is within this data volume range. Requested bus information.

Based on the settings of the preset filter conditions, it can be seen that through the preset filter conditions, only the information required for bus monitoring can be obtained, and other information not required for bus monitoring will be filtered and cleared. Therefore, usually the target bus information obtained must Less than all the bus information included in the bus request, that is, the data amount of the obtained target bus information can be effectively reduced by preset filtering conditions.

In a possible implementation, based on the composition of the bus monitoring unit in the embodiment shown in FIG. 3 , the bus monitoring unit provided in this embodiment further includes an analysis and filtering unit. The parsing and filtering unit responds to the monitoring enable command sent by the control unit, parses the target bus signal to obtain the bus request, and extracts the target bus information in the bus request.

S160. The bus monitoring unit extracts the target data in the target bus information according to the preset tracking conditions.

After extracting the target bus information, the bus monitoring unit further determines whether the target bus information includes indication information indicating that the target bus information is valid. If the target bus information includes the indication information, the bus monitoring unit extracts the target bus information according to the preset tracking conditions. The target data, on the contrary, if the target bus information does not include the indication information, the bus monitoring unit will not perform further processing on the target bus information.

By judging whether the target bus information is valid, the target data will be extracted according to the preset tracking conditions only when the target bus information is valid, which can ensure the validity of the extracted target data and thereby improve the credibility of the bus monitoring results. .

In a possible implementation, the preset tracing conditions are set based on transaction characteristics, where the transaction characteristics used to set the preset tracing conditions may include the address of the bus request, the identification of the bus request, the data content in the bus information, and At least one of the response contents of the bus request. Referring to the setting method of the aforementioned preset filtering conditions, the preset tracking conditions can be set based on a single specified value of the aforementioned at least one transaction characteristic, or a corresponding tracking range can be set based on the aforementioned at least one transaction characteristic. For example, the selected transaction characteristic is the address of a write transaction, and the address of the write transaction is 0x8000_0030. Based on this, you can set the preset tracking condition to this single address, that is, obtain the target data at the address 0x8000_0030, or you can Set the address range based on 0x8000_0030, such as 0x8000_0000~0x8000_1000, that is, the target data in all target bus information with addresses within this address range will be extracted.

Furthermore, the transaction characteristics used to set preset tracking conditions can also be configured according to actual monitoring requirements. In a possible implementation, the control unit can send the transaction characteristics to the bus monitoring unit before the bus monitoring unit extracts the target data in the target bus information according to the preset tracking conditions. After the bus monitoring unit obtains the corresponding transaction characteristics, it can The above method sets preset tracking conditions based on the obtained transaction characteristics, and after the setting is completed, step S160 is executed. In practical applications, selecting transaction characteristics according to actual monitoring requirements, and then setting the aforementioned preset tracking conditions in combination with transaction characteristics can ensure that the target data extracted according to the preset tracking conditions meets the actual needs of bus monitoring. At the same time, preset tracking can also be used Conditional implementation of screening and filtering of target data helps reduce the amount of target data, thereby reducing the logic overhead of bus monitoring and improving monitoring efficiency.

In a possible implementation, a transaction tracking unit can be provided in the bus monitoring unit. The transaction tracking unit is connected to the parsing and filtering unit mentioned in the previous embodiment, receives the target bus information output by the parsing and filtering unit, and tracks according to the preset Conditionally extract target data from target bus information.

To sum up, through the bus monitoring method provided in this embodiment, the bus monitoring unit initially extracts the bus request and obtains the target bus information. After extracting the target bus information, it further extracts the targets required for bus monitoring based on the preset tracking conditions. Data, after the above two data filtering selections, the data volume of the target data can be much smaller than the total data volume requested by the bus. Compared with the method of obtaining all bus information for monitoring in the existing technology, the data volume of the bus information can be effectively reduced. amount, thereby reducing the logic overhead of bus monitoring. Moreover, the acquisition of target bus information is controlled by the monitoring enable command. The target bus information is not obtained at all times. The running time of the bus monitoring unit can be controlled through the monitoring enable command, which helps reduce The power consumption of the bus monitoring unit can be used to meet the actual bus monitoring needs.

Furthermore, through the target data, the working conditions of the internal bus of the on-chip system can also be analyzed, which plays an important role in tracing the source of system operation abnormalities and optimizing system design.

On the basis of the embodiment shown in Figure 4, the present invention provides another bus monitoring method. Referring to the flow chart shown in Figure 5, the bus monitoring method provided by this embodiment is the same as the monitoring method provided by the embodiment shown in Figure 4. On the basis of, it also includes the following steps.

S170. The control unit sends a storage instruction.

In a possible implementation, the system-on-chip is provided with two storage spaces, one is a storage space inside the system-on-chip, and the other is a storage space outside the system-on-chip, where the clock frequency of the storage space inside the system-on-chip is basically It can be synchronized with the clock frequency of the target bus, while the clock frequency of the memory space outside the system-on-chip is usually lower than the clock frequency of the target bus.

Based on the above situation, the control unit instructs through the storage instruction to store the target data into the target storage space. The target storage space may be a storage space inside the system-on-chip or a storage space outside the system-on-chip.

S180. The bus monitoring unit receives the storage instruction.

The specific implementation of the bus monitoring unit receiving the storage instruction can be implemented with reference to the relevant content of S110 in the embodiment shown in FIG. 3, which will not be repeated here.

S190. The bus monitoring unit stores the target data into the target storage space based on the storage instruction.

The bus monitoring unit stores the target data into the internal storage space of the system-on-chip according to the instruction of the storage instruction, or stores the target data into the external storage space of the system-on-chip. Based on the foregoing, it can be understood that the clock frequency of the internal storage space of the on-chip system can basically be synchronized with the clock frequency of the target bus. Storing target data to the internal storage space of the on-chip system can effectively avoid data corruption caused by clock frequency differences. overflow, therefore, the target data can usually be stored in the storage space inside the system-on-chip first. After the internal storage space is fully occupied, the target data can be stored in the storage space outside the system-on-chip.

In a possible implementation, storing the target data into the target storage space based on the storage instruction can be implemented by the transaction tracking unit mentioned above.

In the embodiment shown in Figure 4, the control unit sends a storage instruction to the bus monitoring unit, and the bus monitoring unit determines the timing and target storage space to store the target data according to the storage instruction. This control method allows the control unit to obtain bus information at any time. During the process, the storage of target data is controlled to achieve flexible control of target data storage, but it will also increase the logic overhead of the control unit to a certain extent. For this reason, as another optional implementation method, the storage can also be The instructions are solidified in the bus monitoring unit, so that the bus monitoring unit executes the storage instructions stored by itself after each acquisition of target data, and stores the target data into the target storage space according to the storage instructions. It can be understood that when the storage instruction is fixed in the bus monitoring unit, when the target storage space needs to be changed, the control unit can update the storage instruction stored in the bus monitoring unit.

When the target data is stored in a storage space outside the system, the bus monitoring unit further includes a data export unit. The input side of the data export unit is connected to the transaction tracking unit, and receives the target data output by the transaction tracking unit. Further, the output side of the data export unit is connected to the storage space outside the on-chip system, and stores the obtained target data in the storage space outside the on-chip system. in storage space.

To sum up, on the basis of the foregoing embodiments, the bus monitoring method provided by this embodiment stores the obtained target data and provides a variety of storage options. The storage space for storing the target data can be selected according to the storage instructions. In the target data When the amount of data is small, the target data can be stored in the internal storage space of the on-chip system. Compared with the existing technology that simply stores bus information in the external storage space of the on-chip system, due to the internal storage space of the on-chip system, The clock frequency can basically be synchronized with the clock frequency of the target bus, making up for the speed difference between the high-speed target bus and low-speed information storage, thereby effectively avoiding the overflow of target data and ensuring the integrity of the data; while in the on-chip storage space When exhausted, the target data can also be directly stored in the storage space outside the on-chip system, thereby realizing the storage of massive data and effectively avoiding the loss and omission of target data.

Furthermore, based on any of the above embodiments, the present invention also provides another bus monitoring method. Through the bus monitoring method provided in this embodiment, the operating performance of the target bus can be monitored. Referring to Figure 6, the flow of the bus monitoring method provided in this embodiment may include the following steps.

S200. The control unit sends a strobe command.

The specific implementation of S200 can be implemented with reference to the relevant content of step S100 in the previous embodiment, and will not be repeated here.

S210. The bus monitoring unit receives the strobe instruction.

The specific implementation of S210 can be implemented with reference to the relevant content of step S110 in the previous embodiment, and will not be repeated here.

S220. The bus monitoring unit determines a target bus to be monitored in the multi-channel bus according to the strobe instruction, and obtains the target bus signal of the target bus.

The specific implementation of S220 can be implemented with reference to the relevant content of step S120 in the previous embodiment, and will not be repeated here.

S230. The control unit sends a monitoring enable command.

The specific implementation of S230 can be implemented with reference to the relevant content of step S130 in the previous embodiment, and will not be repeated here.

S240. The bus monitoring unit receives the monitoring enable command.

The specific implementation of S240 can be implemented with reference to the relevant content of step S140 in the previous embodiment, and will not be repeated here.

S250: The bus monitoring unit analyzes the target bus signal to obtain the bus request, and extracts the target bus information in the bus request.

The specific implementation of S250 can be implemented with reference to the relevant content of step S150 in the previous embodiment, and will not be repeated here.

S260. The control unit sends a statistics enable command.

The control unit controls the operation of the bus monitoring unit through the statistical enable command. This command will only be output when the operating performance of the target bus needs to be analyzed. Correspondingly, when the target bus does not need to be analyzed, the control unit will not The bus monitoring unit will be controlled to perform subsequent steps. Such a setting can avoid long-term, high-load operation of the bus monitoring unit and help reduce the operating power consumption of the bus monitoring unit.

S270. The bus monitoring unit receives the statistics enable command.

The bus monitoring unit is connected to the communication interface of the control unit and receives the statistical enable instructions output by the control unit according to a predefined communication protocol with the control unit. The selection of the communication protocol between the bus monitoring unit and the control unit can be implemented with reference to related technologies, and the present invention does not limit this.

S280: The bus monitoring unit counts the reference information used to characterize the operating performance of the target bus in the target bus information.

In a possible implementation, the control unit sends a preset duration to the bus monitoring unit. The preset duration is the cumulative duration of the statistical reference information. After obtaining the preset duration, the bus monitoring unit only extracts data within the preset duration. Statistics are performed on the reference information in multiple target bus information. It is understandable that by setting the preset duration reasonably, it can not only ensure that the amount of reference information data is sufficient to comprehensively evaluate the operating performance of the target bus, but also avoid excessive statistical reference information, resulting in excessive amounts of data that need to be analyzed. , thereby increasing the logic overhead of the bus monitoring unit.

Further, the bus monitoring unit determines whether each target bus information extracted within the preset time period includes indication information indicating that the target bus information is valid, and counts the reference information in the target bus information that includes the indication information. For those that do not include The target bus information of this indication message is not processed further. Before extracting reference information, it is judged whether the target bus information is valid, and the interference of invalid bus information is effectively filtered to ensure that the extracted reference information comes from valid target bus information. The credibility of the reference information is high, which helps Improve the accuracy of bus performance analysis results.

In a possible implementation, the reference information includes at least one of the number of requests of each type and the delay length between bus requests. The bus monitoring unit feeds back the obtained statistical results to the control unit. Based on the statistical results of the number of various types of requests, the control unit can determine the business of the bus and whether the communication efficiency between the two parties of the bus communication meets the requirements. According to the delay between bus requests Based on the statistics of the duration, the control unit can determine which side of the communication side has the current bottleneck affecting the transmission performance of the target bus. Therefore, the statistical results of the director monitoring unit play an important role in analyzing the performance of the target bus. Of course, in practical applications, other indicators that can characterize the operating performance of the target bus can also be used as reference information according to analysis requirements. They are not listed here one by one. They also belong to this article without exceeding the scope of the core idea of the present invention. within the scope of invention protection.

To sum up, in the monitoring method provided in this embodiment, the reference information that characterizes the operating performance of the target bus is statistically analyzed. Based on the obtained reference information, the operating performance of the target bus can be analyzed to improve the information transmission efficiency of the target bus and the overall on-chip system. Provide reference basis for operational performance.

In a possible implementation, the bus monitoring unit is provided with a clock control unit. The clock control unit is connected to the clock unit that provides a unified clock signal in the on-chip system and each component unit in the bus monitoring unit, and controls the output to each component. controlled by the unit's clock signal. Based on this, when no bus in the on-chip system is monitored, the control unit can control the clock control unit to turn off the clock signal of the bus monitoring unit, and then control the bus monitoring unit to stop running, effectively reducing the overall power consumption of the bus monitoring unit. .

It should be noted that in the above-mentioned embodiments, especially in the embodiments shown in FIGS. 4 to 6 , the control unit needs to send multiple different control instructions. At the same time, it may also need to send different control instructions to the bus monitoring unit. Configuration information, such as transaction characteristics, preset duration, etc., the above embodiment is only an example of the timing for the control unit to send control instructions and configuration information, and is not the only limitation on the information interaction process between the control unit and the bus monitoring unit. Taking the embodiment shown in Figure 5 as an example, the control unit can synchronously send monitoring enable instructions and storage instructions to the bus monitoring unit. The bus monitoring unit first responds to the monitoring enable command, extracts the target data of the target bus, and only after obtaining the target data It will respond to the storage command and store the obtained target data into the target storage space. Obviously, this adjustment of the control instruction sending timing will not affect the overall bus monitoring process, and therefore, it also falls within the scope of protection of the present invention. In the case where the bus monitoring unit solidifies the storage instruction, the control unit can only send the monitoring enable instruction to the bus monitoring unit. After the bus monitoring unit obtains the target data in response to the bus monitoring instruction, it further executes the storage instruction stored by itself and transfers the target data. Save to target storage space.

The bus monitoring unit and control unit provided by the present invention are introduced below. The bus monitoring unit and control unit provided by the present invention belong to the same application concept as the bus monitoring method provided by the embodiments of the present application, and can execute the methods provided by any embodiment of the present application. The bus monitoring method has corresponding functional units and beneficial effects for executing the bus monitoring method. For technical details that are not described in detail in this embodiment, please refer to the bus monitoring method provided by the embodiment of this application, and will not be described again here.

In order to more intuitively reflect the application of the bus monitoring unit and the control unit provided by the present invention, in the accompanying drawings corresponding to the subsequent content, the bus monitoring unit and the control unit are shown based on the on-chip system, and the control unit and the bus are shown. The connection relationship between the various components within the monitoring unit. At the same time, in order to highlight the bus monitoring unit and control unit provided by the present invention, other components in the on-chip system, such as the processor, each functional unit, etc. are no longer shown. Only the on-chip bus connected to the bus monitoring unit is shown.

Referring to FIG. 7 , FIG. 7 shows an on-chip system provided by an embodiment of the present invention. The on-chip system provided by this embodiment includes an on-chip bus, a bus monitoring unit, and a control unit 60 .

The bus monitoring unit provided in this embodiment includes a selective synchronization unit 10, which is connected to the control unit 60 and the on-chip bus respectively.

The control unit 60 is used to send a gating instruction, and the selection synchronization unit 10 is used to receive the gating instruction. The gating instruction is used to indicate the target bus that needs to be monitored in the multi-channel bus; according to the gating instruction, the monitored target bus is determined in the multi-channel bus. One target bus, and obtain the target bus signal of the target bus.

Furthermore, on the basis of the embodiment shown in FIG. 7 , this embodiment of the present invention provides another system-on-chip, the structure of which can be seen in FIG. 8 .

In the embodiment shown in FIG. 8 , the bus monitoring unit includes a selection synchronization unit 10 , an analysis and filtering unit 20 and a transaction tracking unit 30 which are connected in sequence. The control unit 60 is connected to the selection synchronization unit 10 , the analysis and filtering unit 20 and the transaction tracking unit 30 respectively. connected.

Based on the foregoing embodiments, the control unit 60 is also configured to send a monitoring enable instruction. The parsing and filtering unit 20 is configured to receive the monitoring enable command, respond to the monitor enable command, parse the target bus signal to obtain the bus request, and extract the target bus information in the bus request. The transaction tracking unit 30 is used to extract target data in the target bus information according to preset tracking conditions.

In a possible implementation, the control unit 60 is also configured to send transaction characteristics, and the parsing and filtering unit 20 is configured to set preset tracking conditions based on the obtained transaction characteristics.

In a possible implementation, the control unit 60 can also control the operation of the transaction tracking unit 30. For example, it can send a tracking enable instruction to the transaction tracking unit 30, and use the instruction to control the transaction tracking unit 30 to extract data according to the preset tracking conditions. Target data in target bus information.

Furthermore, based on the embodiment shown in FIG. 8 , this embodiment of the present invention provides another system-on-chip, the structure of which can be seen in FIG. 9 .

In the embodiment shown in FIG. 9 , the bus monitoring unit includes a selection synchronization unit 10 , an analysis and filtering unit 20 , a transaction tracking unit 30 and a data export unit 40 which are connected in sequence. The transaction tracking unit 30 is also connected to the storage space inside the system-on-chip (abbreviated as on-chip storage in Figure 9). Correspondingly, the data export unit 40 is connected to the storage space outside the system-on-chip (abbreviated as off-chip storage in Figure 9). The control unit 60 is respectively connected to the selection synchronization unit 10, the analysis and filtering unit 20, the transaction tracking unit 30 and the data export unit 40 inside the bus monitoring unit.

Based on the foregoing embodiments, the control unit 60 is also used to send storage instructions. The storage instruction is used to instruct the target data to be stored in the target storage space, and the target storage space includes a storage space inside the system-on-chip or a storage space outside the system-on-chip; the transaction tracking unit 30 is also used to receive the storage instruction sent by the control unit 60, and based on Store instructions to store target data into the target storage space.

When the target storage space is off-chip storage as shown in FIG. 9 , the data export unit 40 is configured to receive the target data output by the transaction tracking unit 30 and store the obtained target data in the off-chip storage.

Further, an embodiment of the present invention provides another on-chip system. As shown in Figure 10, the on-chip system provided by this embodiment includes an on-chip bus, a control unit 60 and a bus monitoring unit. The bus monitoring unit includes selectors connected in sequence. Synchronization unit 10, analysis and filtering unit 20 and performance statistics unit 50. The selection synchronization unit 10 is connected to the on-chip bus inside the on-chip system, and the control unit 60 is connected to the selection synchronization unit 10, the analysis and filtering unit 20, and the performance statistics unit 50 respectively.

On the basis of the foregoing embodiments, the control unit 60 is also used to send statistics enable instructions, and the performance statistics unit 50 is used to count the reference information used to characterize the operating performance of the target bus in the target bus information. The reference information includes the number of various types of requests. and at least one of the delay lengths between bus requests.

It can be understood that the performance statistics unit 50 provided in this embodiment can also be combined with the embodiment shown in Figure 9, that is, the performance statistics unit 50 is connected to the analysis and filtering unit 20 in the embodiment shown in Figure 9, and can also receive analysis and filtering The target bus information of the unit 20 is collected, and the reference information used to characterize the target bus operating performance in the target bus information is collected. In this case, another on-chip system can be obtained by combination.

Further, for the on-chip system provided in any of the above embodiments, the bus monitoring unit is provided with a clock control unit (not shown in the figure) for controlling the clock signal. When no bus is monitored, the control unit 60 also uses The clock control unit is controlled to turn off the clock signal of the bus monitoring unit.

The present invention also provides a computer device, including the system-on-chip provided in any of the above embodiments.

In some embodiments, this embodiment also provides a computer-readable storage medium, such as a floppy disk, an optical disk, a hard disk, a flash memory, a USB flash drive, an SD (Secure Digital Memory Card) card, or an MMC (Multimedia Card). Multimedia card) card, etc., one or more instructions to implement the above steps are stored in the computer-readable storage medium. When this one or more instructions are executed by one or more processors, the processor will execute the preceding steps. Describes bus monitoring methods. Please refer to the above description for the relevant specific implementation, and will not be elaborated here.

In addition to the above-mentioned methods and devices, embodiments of the present application may also be computer program products, which include computer program instructions. When run by a processor, the computer program instructions cause the processor to execute various methods described in the above contents of this specification according to the present application. Steps in the bus monitoring method of the embodiment.

The computer program product can be written in any combination of one or more programming languages to write program codes for performing the operations of the embodiments of the present application. The programming languages include object-oriented programming languages, such as Java, C++, etc., and also include conventional programming languages. A procedural programming language such as "C" or a similar programming language. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server execute on.

Those skilled in the art can understand that various modifications and improvements may occur to the content disclosed in this disclosure. For example, the various devices or components described above can be implemented by hardware, software, firmware, or a combination of some or all of the three.

Furthermore, although this disclosure makes various references to certain elements in systems according to embodiments of the disclosure, any number of different elements may be used and run on the client and/or server. The units are illustrative only, and different units may be used with different aspects of the system and methods.

Flowcharts are used in this disclosure to illustrate the steps of methods according to embodiments of the disclosure. It should be understood that the preceding or following steps are not necessarily performed in exact order. Instead, the various steps can be processed in reverse order or simultaneously. At the same time, other operations can be added to these processes.

Those of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, such as a read-only memory. Optionally, all or part of the steps of the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each unit/unit in the above embodiments can be implemented in the form of hardware or in the form of software functional units. The present disclosure is not limited to any particular form of combination of hardware and software.

Unless otherwise defined, all terms used herein have the same meanings commonly understood by one of ordinary skill in the art to which this disclosure belongs. It should also be understood that terms such as those defined in ordinary dictionaries should be construed to have meanings consistent with their meanings in the context of the relevant technology and should not be interpreted in an idealized or highly formalized sense unless expressly stated herein Ground is defined this way.

The above is a description of the present disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of the present disclosure have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without departing from the novel teachings and advantages of the disclosure. Accordingly, all such modifications are intended to be included within the scope of the disclosure as defined by the claims. It is to be understood that the above is a description of the present disclosure and should not be construed as limited to the particular embodiments disclosed, and that modifications to the disclosed embodiments as well as other embodiments are intended to be included within the scope of the appended claims. The disclosure is defined by the claims and their equivalents.

Claims (20)

1. A bus monitoring method, characterized in that it is applied to an on-chip system, the on-chip system includes a control unit and a bus monitoring unit, and the method includes the following steps performed by the bus monitoring unit: Receive a gating instruction sent by the control unit, where the gating instruction is used to indicate a target bus that needs to be monitored in the multi-channel bus; According to the gating instruction, a target bus to be monitored is determined in the multi-channel bus, and a target bus signal of the target bus is obtained. 2. The method according to claim 1, characterized in that, the method further comprises: Receive the monitoring enable instruction sent by the control unit; In response to the monitoring enable instruction, analyze the target bus signal to obtain a bus request, and extract the target bus information in the bus request; Extract target data in the target bus information according to preset tracking conditions. 3. The method according to claim 2, characterized in that extracting target bus information in the bus request includes: Determine whether the bus request complies with the bus protocol supported by the target bus; If the bus request complies with the bus protocol supported by the target bus, extract the target bus information in the bus request according to the preset filtering conditions; Wherein, the preset filtering condition is set based on at least one of the data amount of the bus request, the address corresponding to the bus request, and the identification mark corresponding to the bus request. 4. The method of claim 2, wherein extracting target data in the target bus information according to preset tracking conditions includes: Determine whether the target bus information includes indication information indicating that the target bus information is valid; If the indication information is included, the target data in the target bus information is extracted according to the preset tracking conditions. 5. The method according to claim 4, characterized in that, before extracting the target data in the target bus information according to the preset tracking conditions, the method further includes: Obtain transaction characteristics and set the preset tracking conditions based on the transaction characteristics; The transaction characteristics include at least one of the requested address, the requested identification, the data content in the bus information, and the requested response content. 6. The method according to claim 2, characterized in that the method further comprises: Receive a storage instruction sent by the control unit; wherein the storage instruction is used to instruct the target data to be stored in a target storage space, and the target storage space includes a storage space inside the system-on-chip or outside the system-on-chip. storage space; Based on the storage instruction, the target data is stored in the target storage space. 7. The method according to claim 1, characterized in that, determining a target bus for monitoring in a multi-channel bus according to the gating instruction, and acquiring a target bus signal of the target bus, includes: Perform clock synchronization processing on the bus signals of each bus to obtain corresponding synchronous bus signals that are synchronized with the clock frequency of the bus monitoring unit; Obtain the synchronous bus signal of the target bus indicated by the strobe instruction to obtain the target bus signal. 8. The method according to any one of claims 2 to 7, further comprising: counting reference information used to characterize the operating performance of the target bus in the target bus information, and the reference information includes various types of At least one of the number of requests and the length of delay between bus requests. 9. The method according to claim 8, characterized in that, counting the reference information used to characterize the operating performance of the target bus in the target bus information includes: In response to the statistics enable instruction, statistics are performed on the reference information among the plurality of target bus information extracted within a preset time period. 10. The method according to claim 9, wherein the counting of reference information among multiple target bus information extracted within a preset time period includes: Determine respectively whether each of the target bus information extracted within the preset time period includes indication information indicating that the target bus information is valid; Statistics are performed on the reference information in the target bus information including the indication information. 11. A bus monitoring method, characterized in that it is applied to an on-chip system, and the on-chip system includes a control unit and a bus monitoring unit. The bus monitoring method includes the following steps performed by the control unit: A gating instruction is sent, and the gating instruction is used to instruct the bus monitoring unit to determine a target bus to be monitored in a multi-channel bus, and to obtain a target bus signal of the target bus. 12. The method according to claim 11, characterized in that the method further comprises: Send a monitoring enable instruction, which is used to control the bus monitoring unit to parse the target bus signal to obtain a bus request, extract the target bus information in the bus request, and extract the target bus information according to the preset tracking conditions Target data in target bus information. 13. The method of claim 12, further comprising: Send transaction characteristics so that the bus monitoring unit sets the preset tracking condition based on the transaction characteristics; The transaction characteristics include at least one of the address of the bus request, the identification of the bus request, the data content in the bus information, and the response content of the bus request. 14. The method according to claim 12, further comprising: sending a storage instruction, the storage instruction being used to instruct the bus monitoring unit to store the target data into a storage space inside the on-chip system or Storage space external to the system-on-chip. 15. The method according to claim 12, further comprising: sending a statistics enable instruction, the statistics enable instruction being used to control the bus monitoring unit to count the target bus information used to characterize the Reference information for target bus operational performance. 16. The method according to any one of claims 11 to 15, characterized in that the bus monitoring unit is provided with a clock control unit for controlling clock signals, and the method further includes: When no bus is monitored, the clock control unit is controlled to turn off the clock signal of the bus monitoring unit. 17. A bus monitoring unit, characterized in that it is applied to a system on a chip, and the system on a chip includes a control unit and the bus monitoring unit, wherein the bus monitoring unit executes as described in any one of claims 1 to 10 bus monitoring method. 18. A control unit, characterized in that it is applied to an on-chip system, the on-chip system includes a bus monitoring unit and the control unit, wherein the control unit executes the bus as claimed in any one of claims 11 to 16 Monitoring methods. 19. A system on a chip, characterized in that it includes: a processor, a bus, at least one functional unit, a control unit as claimed in claim 18, and a bus monitoring unit as claimed in claim 17, wherein, The processor is communicatively connected to each of the functional units through the bus; The bus monitoring unit is connected to the control unit and the bus respectively. 20. A computer device, characterized by comprising the system on a chip according to claim 19.