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CN111723038B - Signal compensation method and device, electronic equipment and storage medium - Google Patents

Signal compensation method and device, electronic equipment and storage medium Download PDF

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Publication number
CN111723038B
CN111723038B CN202010538147.1A CN202010538147A CN111723038B CN 111723038 B CN111723038 B CN 111723038B CN 202010538147 A CN202010538147 A CN 202010538147A CN 111723038 B CN111723038 B CN 111723038B
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target
compensation
signal
equipment
corresponding relation
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CN111723038A (en
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张志玮
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Guangdong Inspur Smart Computing Technology Co Ltd
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Guangdong Inspur Big Data Research Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38Information transfer, e.g. on bus
    • G06F13/40Bus structure
    • G06F13/4004Coupling between buses
    • G06F13/4022Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38Information transfer, e.g. on bus
    • G06F13/40Bus structure
    • G06F13/4063Device-to-bus coupling
    • G06F13/4068Electrical coupling
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0026PCI express

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
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Abstract

The application discloses a signal compensation method, a device, an electronic device and a computer readable storage medium, wherein the method comprises the following steps: determining the equipment model of each target equipment accessed through the target connector after electrification; acquiring a target corresponding relation stored in an external memory; the target corresponding relation is a preset corresponding relation between the compensation intensity and the equipment model; determining the compensation intensity corresponding to the equipment model of each target equipment according to the target corresponding relation; and performing Re-driver signal compensation on each target device based on the compensation intensity of each target device. According to the signal compensation method, the compensation intensity is set according to the target corresponding relation stored in the external memory and the equipment model of the target equipment, so that the flexibility of Re-driver compensation is improved.

Description

Signal compensation method and device, electronic equipment and storage medium
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a signal compensation method and apparatus, an electronic device, and a computer-readable storage medium.
Background
With the technical development of PCIe (peripheral component interconnect express), the transmission speed is faster and faster, the loss of PCB (Printed Circuit Board, english name: Printed Circuit Board) is larger and larger, and the PCIe signal driving capability of CPU (central processing unit, chinese name: central processing unit) is insufficient to reach PCIe devices due to the large PCB loss in system design, and an IC with additional signal enhancement is often needed to enhance the signal strength. The signal reinforcement of PCIe has two schemes of Re-timer and Re-driver which can be selected, the Re-driver only aims at the signal reinforcement, the reinforcement magnitude is according to a set value, and the PCIe signal state is not considered, so that the condition of overcompensation or undercompensation can occur when the PCIe device is replaced. The Re-timer can reform according to the received PCIe signal, which means that the signals of different strengths of the PCIe signal entering the Re-timer can be reformed and then optimized to be output, but the cost of parts is higher.
Therefore, how to improve the flexibility of the Re-driver compensation is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
An object of the present application is to provide a signal compensation method, apparatus, electronic device and computer readable storage medium, which improve the flexibility of Re-driver compensation.
To achieve the above object, the present application provides a signal compensation method, comprising:
determining the equipment model of each target equipment accessed through the target connector after electrification;
acquiring a target corresponding relation stored in an external memory; the target corresponding relation is a preset corresponding relation between the compensation intensity and the equipment model;
determining the compensation intensity corresponding to the equipment model of each target equipment according to the target corresponding relation;
and performing Re-driver signal compensation on each target device based on the compensation intensity of each target device.
Wherein, still include:
receiving an updating signal sent by the BMC, and executing the step of acquiring the target corresponding relation stored in the external memory; the update signal is a signal sent by the BMC after the target corresponding relationship stored in the external memory is updated.
Before obtaining the target corresponding relationship stored in the external memory, the method further includes:
and sending a reading signal to the BMC so as to inform the BMC to stop updating the target corresponding relation.
Wherein the target connector comprises a PCIe connector or an NVMe connector.
Wherein, if the target connector is specifically an NVMe connector, the method further includes:
when the triggering of a hot plug signal is detected, acquiring the equipment model of the inserted equipment;
determining the compensation intensity corresponding to the equipment model of the inserting equipment according to the target corresponding relation;
and performing Re-driver signal compensation on the inserting equipment based on the compensation intensity of the inserting equipment.
To achieve the above object, the present application provides a signal compensation apparatus, comprising:
the first determining module is used for determining the equipment model of each target equipment accessed through the target connector after being electrified;
the first acquisition module is used for acquiring a target corresponding relation stored in an external memory; the target corresponding relation is a preset corresponding relation between the compensation intensity and the equipment model;
the second determining module is used for determining the compensation intensity corresponding to the equipment model of each target equipment according to the target corresponding relation;
the first compensation module is used for carrying out Re-driver signal compensation on each target device based on the compensation intensity of each target device.
Wherein, still include:
the receiving module is used for receiving an updating signal sent by the BMC and starting the working process of the first acquisition module; the update signal is a signal sent by the BMC after the target corresponding relationship stored in the external memory is updated.
Wherein, still include:
and the sending module is used for sending a reading signal to the BMC so as to inform the BMC to stop updating the target corresponding relation.
To achieve the above object, the present application provides an electronic device including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the signal compensation method when executing the computer program.
To achieve the above object, the present application provides a computer-readable storage medium, which stores a computer program, and the computer program realizes the steps of the signal compensation method when being executed by a processor.
According to the above solution, a signal compensation method provided by the present application includes: determining the equipment model of each target equipment accessed through the target connector after electrification; acquiring a target corresponding relation stored in an external memory; the target corresponding relation is a preset corresponding relation between the compensation intensity and the equipment model; determining the compensation intensity corresponding to the equipment model of each target equipment according to the target corresponding relation; and performing Re-driver signal compensation on each target device based on the compensation intensity of each target device.
According to the signal compensation method, the compensation intensity is set according to the target corresponding relation stored in the external memory and the equipment model of the target equipment, so that the flexibility of Re-driver compensation is improved. The signal compensation method provided by the application can enable the Re-driver to be applied to limited PCIe and NVMe (Non-Volatile Memory express) devices, is lower in cost compared with the Re-timer, can reduce the cost of parts of a system, and improves the competitiveness of products. The application also discloses a signal compensation device, an electronic device and a computer readable storage medium, which can also realize the technical effects.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a flow chart illustrating a signal compensation method according to an exemplary embodiment;
FIG. 2 is a flow chart illustrating another signal compensation method according to an exemplary embodiment;
FIG. 3 is a block diagram of a signal compensation system according to an exemplary embodiment;
FIG. 4 is a block diagram illustrating another signal compensation system according to an exemplary embodiment;
FIG. 5 is a block diagram of a signal compensation apparatus according to an exemplary embodiment;
FIG. 6 is a block diagram illustrating an electronic device in accordance with an exemplary embodiment.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application discloses a signal compensation method, which improves the flexibility of Re-driver compensation.
Referring to fig. 1, a flowchart of a signal compensation method according to an exemplary embodiment is shown, as shown in fig. 1, including:
s101: determining the equipment model of each target equipment accessed through the target connector after electrification;
the execution subject of the embodiment may be a CPLD (Complex Programmable Logic Device) for Re-driver signal compensation of each target Device accessing the CPU through a target connector, where the target connector may include a PCIe connector or an NVMe connector.
In this step, when the system enters S0 (i.e. after power-on), the CPLD can know the existence of the target device through the PRNST # signal, and read the device model of the target device through I2C (Inter-Integrated Circuit), so that the subsequent steps can set the compensation strength according to the device model.
S102: acquiring a target corresponding relation stored in an external memory; the target corresponding relation is a preset corresponding relation between the compensation intensity and the equipment model;
in a specific implementation, the compensation intensities and the device models corresponding to the respective compensation intensities, i.e. the target correspondence, are stored by an external memory. The target corresponding relation is stored in an external memory, so that the BMC can be remotely updated without modifying the CPLD code. The present embodiment does not limit the specific representation manner of the device signal, for example, the device type may be determined by the Subsystem vector ID 16bit and the Subsystem ID 16bit specified by PCIe SIG, and the compensation strength includes four EQ strengths, that is, EQ1, EQ2, EQ3, and EQ4, and a default value without correspondence is specified, that is, if there is no preset compensation strength in the connected target device, the default value is taken. One correspondence between the compensation intensity and the device model is shown in table 1:
TABLE 1
Intensity of compensation Subsystem Vendor ID&Subsystem ID
EQ1 1BD4003A、1BD40039…
EQ2 1BD40042、1BD40056…
EQ3 1BD40041, device model number not present in the table
EQ4 1BD40057、1BD40058…
Preferably, before this step, the method further comprises: and sending a reading signal to the BMC so as to inform the BMC to stop updating the target corresponding relation. In specific implementation, the BMC may update the target corresponding relationship stored in the external memory, so that the CPLD may send a read signal to the BMC before reading the target corresponding relationship stored in the external memory, so as to notify the BMC to stop updating the target corresponding relationship, thereby avoiding a read error. It can be understood that, after the BMC updates the target correspondence, the CPLD needs to be read again to update the compensation strength corresponding to each target device, that is, this embodiment further includes: receiving an update signal sent by the BMC, and executing the step of acquiring the target corresponding relation stored in the external memory; the update signal is a signal sent by the BMC after the target corresponding relationship stored in the external memory is updated.
S103: determining the compensation intensity corresponding to the equipment model of each target equipment according to the target corresponding relation;
s104: and performing Re-driver signal compensation on each target device based on the compensation intensity of each target device.
In the specific implementation, the compensation intensity corresponding to the equipment model of each target equipment is determined according to the target corresponding relation, and Re-driver signal compensation is carried out on each target equipment based on the compensation intensity of each target equipment. It can be understood that target devices of different device types correspond to different compensation strengths, and the flexibility of Re-driver signal compensation is higher.
According to the signal compensation method provided by the embodiment of the application, the compensation intensity is set according to the equipment model of the target equipment according to the target corresponding relation stored in the external memory, so that the flexibility of Re-driver compensation is improved. The signal compensation method provided by the application can enable the Re-driver to be applied to limited PCIe and NVMe devices, is lower in cost compared with the Re-timer, can reduce the cost of parts of a system, and improves the competitiveness of a product.
It should be noted that, because the NVMe supports hot plug without power off, the NVMe needs to detect the target device once again and modify the Re-driver compensation strength every time the NVMe is hot plugged. Specifically, the method comprises the following steps:
referring to fig. 2, a flow chart of another signal compensation method according to an exemplary embodiment is shown, as shown in fig. 2, including:
s201: when the triggering of a hot plug signal is detected, acquiring the equipment model of the inserted equipment;
s202: determining the compensation intensity corresponding to the equipment model of the inserting equipment according to the target corresponding relation;
s203: and performing Re-driver signal compensation on the inserting equipment based on the compensation intensity of the inserting equipment.
In the specific implementation, when the NVMe is not powered off for hot plug maintenance, the CPLD detects the IFDET # trigger of the NVMe, obtains the device model of the plug-in device, determines the compensation intensity corresponding to the device model according to the target corresponding relationship, and finally, the hot plug I2C of the CPU receives the IFDET # signal to start the hot plug action.
Referring to an embodiment of the present application, fig. 3 is a block diagram of a signal compensation system, in which TX and RX are transmitting and receiving, respectively. The Re-driver is designed as I2C slave mode, when the system enters S0, the CPLD can know the existence of the PCIe device through a PCIe PRNST # signal, read the model of the PCIe device through I2C, and store a plurality of compensation settings and PCIe devices corresponding to all values through the EEPROM. The device is judged through the Subsystem vector ID 16bit and the Subsystem ID 16bit specified by PCIe SIG, and a default value which is set when no corresponding value is detected, for example EQ3, is set through the mode that 4 kinds of EQ intensities correspond to PCIe devices so as to avoid that compensation intensity is not set when no PCIe device in a table is inserted. The BMC can remotely UPDATE the PCIe device, the corresponding table and a plurality of EQ intensities without modifying the CPLD code, sets the CPLD to enter S0 to READ the EEPROM once and READs the EEPROM again when receiving the BMC _ UPDATE GPIO, stores the EEPROM into the memory of the CPLD to UPDATE the Re-driver, and transmits the CPLD _ READ GPIO to inform the BMC when reading the EEPROM to prevent the BMC from updating the EEPROM.
Through the architecture, the PCIe Re-driver can correspondingly modify the strength according to the inserted PCIe devices, and when the system inserts the PCIe devices which are not listed any more, the initial value is used.
Due to the fact that the NVMe supports hot plug without power failure of the system, the NVMe needs to detect the modification Re-driver compensation of the PCIe device except for starting, and needs to detect the modification Re-driver compensation intensity of the PCIe device once again each time the system is hot plugged. FIG. 4 is a diagram of another signal compensation system, which is configured to enable the Re-driver update in the same manner as the PCIe connector. When the NVMe is not powered off and the NVMe is subjected to hot plug maintenance, the CPLD detects IFDET # trigger of the NVMe, reads the Subsystem vector ID and Subsystem ID of the NVMe SSD to know the model, then the CPLD updates the Re-driver set value, and finally the hot plug I2C of the CPU receives the IFDET # signal to start the hot plug action.
In the following, a signal compensation apparatus according to an embodiment of the present application is introduced, and a signal compensation apparatus described below and a signal compensation method described above may be referred to with each other.
Referring to fig. 5, a block diagram of a signal compensation apparatus according to an exemplary embodiment is shown, as shown in fig. 5, including:
a first determining module 501, configured to determine, after being powered on, a device model of each target device accessed through a target connector;
a first obtaining module 502, configured to obtain a target correspondence stored in an external memory; the target corresponding relation is a preset corresponding relation between the compensation intensity and the equipment model;
a second determining module 503, configured to determine, according to the target correspondence, a compensation strength corresponding to the device model of each target device;
the first compensation module 504 is configured to perform Re-driver signal compensation on each target device based on the compensation strength of each target device.
The signal compensation device provided by the embodiment of the application sets the compensation intensity according to the target corresponding relation stored in the external memory and the equipment model of the target equipment, so that the flexibility of Re-driver compensation is improved. The signal compensation method provided by the application can enable the Re-driver to be applied to limited PCIe and NVMe devices, is lower in cost compared with the Re-timer, can reduce the cost of parts of a system, and improves the competitiveness of a product.
On the basis of the above embodiment, as a preferred implementation, the method further includes:
the receiving module is used for receiving an updating signal sent by the BMC and starting the working process of the first acquisition module; the update signal is a signal sent by the BMC after the target corresponding relationship stored in the external memory is updated.
On the basis of the above embodiment, as a preferred implementation, the method further includes:
and the sending module is used for sending a reading signal to the BMC so as to inform the BMC to stop updating the target corresponding relation.
On the basis of the above embodiment, as a preferred implementation, the target connector includes a PCIe connector or an NVMe connector.
On the basis of the above embodiment, as a preferred implementation, if the target connector is specifically an NVMe connector, the apparatus further includes:
the second acquisition module is used for acquiring the equipment model of the plug-in equipment when the triggering of the hot plug signal is detected;
a third determining module, configured to determine, according to the target correspondence, a compensation intensity corresponding to the device model of the insertion device;
and the second compensation module is used for carrying out Re-driver signal compensation on the inserting equipment based on the compensation intensity of the inserting equipment.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
The present application further provides an electronic device, and referring to fig. 6, a structure diagram of an electronic device 600 provided in an embodiment of the present application may include a processor 11 and a memory 12, as shown in fig. 6. The electronic device 600 may also include one or more of an input/output (I/O) interface 13, and a communications component 14.
The processor 11 is configured to control the overall operation of the electronic apparatus 600 to complete all or part of the steps of the signal compensation method. The memory 12 is used to store various types of data to support operation of the electronic device 600, such as instructions for any application or method operating on the electronic device 600 and application-related data. The Memory 12 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The I/O interface 13 provides an interface between the processor 11 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 14 is used for wired or wireless communication between the electronic device 600 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so that the corresponding Communication component 14 may include: Wi-Fi module, bluetooth module, NFC module.
In an exemplary embodiment, the electronic Device 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the Signal compensation method described above.
In another exemplary embodiment, a computer readable storage medium including program instructions for implementing the steps of the signal compensation method described above when executed by a processor is also provided. For example, the computer readable storage medium may be the memory 12 comprising program instructions that are executable by the processor 11 of the electronic device 600 to perform the signal compensation method.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (7)

1. A signal compensation method applied to a CPLD, the method comprising:
determining the equipment model of each target equipment accessed through the target connector after electrification;
acquiring a target corresponding relation stored in an external memory; the target corresponding relation is a preset corresponding relation between the compensation intensity and the equipment model;
determining the compensation intensity corresponding to the equipment model of each target equipment according to the target corresponding relation;
performing Re-driver signal compensation on each target device based on the compensation intensity of each target device;
wherein, still include:
receiving an update signal sent by the BMC, and executing the step of acquiring the target corresponding relation stored in the external memory; the update signal is a signal sent by the BMC after the target corresponding relation stored in the external memory is updated;
wherein, if the target connector is specifically an NVMe connector, the method further includes:
when the triggering of a hot plug signal is detected, acquiring the equipment model of the inserted equipment;
determining the compensation intensity corresponding to the equipment model of the inserting equipment according to the target corresponding relation;
and performing Re-driver signal compensation on the inserting equipment based on the compensation intensity of the inserting equipment.
2. The signal compensation method of claim 1, wherein before obtaining the target mapping relationship stored in the external memory, the method further comprises:
and sending a reading signal to the BMC so as to inform the BMC to stop updating the target corresponding relation.
3. The signal compensation method of claim 1, wherein the target connector comprises a PCIe connector or an NVMe connector.
4. A signal compensation device, applied to a CPLD, the device comprising:
the first determining module is used for determining the equipment model of each target equipment accessed through the target connector after being electrified;
the first acquisition module is used for acquiring a target corresponding relation stored in an external memory; the target corresponding relation is a preset corresponding relation between the compensation intensity and the equipment model;
the second determining module is used for determining the compensation intensity corresponding to the equipment model of each target equipment according to the target corresponding relation;
the first compensation module is used for carrying out Re-driver signal compensation on each target device based on the compensation intensity of each target device;
wherein, still include:
the receiving module is used for receiving an updating signal sent by the BMC and starting the working process of the first acquisition module; the update signal is a signal sent by the BMC after the target corresponding relation stored in the external memory is updated;
wherein, if the target connector is specifically an NVMe connector, the apparatus further includes:
the second acquisition module is used for acquiring the equipment model of the plug-in equipment when the triggering of the hot plug signal is detected;
a third determining module, configured to determine, according to the target correspondence, a compensation intensity corresponding to the device model of the insertion device;
and the second compensation module is used for carrying out Re-driver signal compensation on the inserting equipment based on the compensation intensity of the inserting equipment.
5. The signal compensation apparatus of claim 4, further comprising:
and the sending module is used for sending a reading signal to the BMC so as to inform the BMC to stop updating the target corresponding relation.
6. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the signal compensation method according to any one of claims 1 to 3 when executing the computer program.
7. A computer-readable storage medium, having a computer program stored thereon, wherein the computer program is executed by a processor to implement the steps of the signal compensation method according to any one of claims 1 to 3.
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