CN113645088B - Automatic regulation method, system, device and medium for network card NCSI signal - Google Patents

Abstract

A method, system, device and readable storage medium for automatically adjusting the NCSI signal of a network card proposed by the present invention, the method includes: connecting the NCSI signal of the BMC to the CPLD of the main board, and transmitting the NCSI signal to the PHY chip of the network card through the CPLD of the main board NCSI signal; the ID value of the network card obtained from the BIOS through the CPLD; judge whether the NCSI delay value of the network card is stored in the CPLD according to the ID value of the network card; if so, adjust the NCSI timing according to the NCSI delay value, and establish communication between the network card and the BMC; if not , adjust the NCSI delay value through the CPLD, and perform an adaptation test of the network card after the adjustment is completed, and store the current NCSI delay value after the adaptation is successful. The invention effectively solves the problem that the network card adaptation fails when the NCSI signal link is too long and the network card NCSI signal delay cannot be adjusted.

Description

Automatic adjustment method, system, device and medium of network card NCSI signal

technical field

The invention relates to the technical field of server testing, and more specifically relates to an automatic adjustment method, system, device and readable storage medium of an NCSI signal of a network card.

Background technique

With the development of emerging technologies such as 5G, big data, cloud computing, and industrial Internet, the interaction of network data in servers is becoming more and more frequent. Various PCIE network cards or OCP network cards are widely used, and servers have a lot of demand for network cards. Among them, the network card comes with out-of-band management of the server. Through out-of-band management, engineers can manage and maintain the server through the network connection at any place without going to the laboratory computer room. NCSI (Network Controller Sideband Interface, Network Controller Sideband Interface) is a signal interface that implements server out-of-band management.

In order to meet the various configuration needs of customers, for example: some configurations require NCSI to be connected through the front IO, and some configurations require NCSI to be connected through the rear IO, but there is only one interface for the NCSI on the BMC, taking into account the NCSI Front-out and back-out will cause the length of NCSI on the board to exceed 10 inches, and usually the length of NCSI cables also exceeds 10 inches. Not counting the length of the NCSI signal traces on the NIC, the length of the NCSI traces of the BMC on the motherboard plus the corresponding cables has exceeded 20 inches, exceeding the NCSI design requirements in the BMC manual. The motherboards of different manufacturers will adapt to the network cards of different manufacturers, and the motherboard and the network card are designed without knowing the length of each other's traces. The total routing of NCSI exceeds the specification requirements, which will cause timing errors of NCSI. Specifically, the setup and hold time of the BMC NCSI RX signal on the motherboard cannot meet the timing requirements, but the smart network card connected to the NCSI cannot adjust the delay to meet the RX signal timing requirements of the BMC receiver. It can be seen that the NCSI signal fixed delays of network cards from different manufacturers are not exactly the same, which makes it difficult for the NCSI signal timing on the motherboard to have a unified delay value.

Therefore, how to realize the automatic adjustment of the NCSI signal of the network card to adapt to the network card equipment of different manufacturers and realize the stable communication of the network card is an urgent problem to be solved.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a method, system, device and readable storage medium for automatically adjusting the NCSI signal of a network card, which effectively solves the problem that the timing delay of NCSI cannot be automatically adjusted due to too long wiring, which causes the server and The problem of network card adaptation failure.

In order to achieve the above object, the present invention is realized through the following technical solutions: a method for automatically adjusting network card NCSI signals, comprising:

Connect the NCSI signal of the BMC to the CPLD of the main board, and transmit the NCSI signal to the PHY chip of the network card through the CPLD of the main board;

Obtain the ID value of the network card from the BIOS through CPLD;

Determine whether the NCSI delay value of the network card is stored in the CPLD according to the ID value of the network card;

If yes, read the NCSI delay value, adjust the NCSI timing according to the NCSI delay value, and establish the communication between the network card and the BMC;

If not, the NCSI delay value is adjusted through the CPLD, and an adaptation test of the network card is performed after the adjustment is completed. After the adaptation is successful, the current NCSI delay value is stored in the CPLD.

Further, the NCSI signal of the BMC is connected to the CPLD of the mainboard, and the transmission of the NCSI signal to the network card PHY chip through the CPLD of the mainboard specifically includes:

Set up the I2C signal connection between BMC and CPLD, and the I2C signal is used to transmit timing parameters and NCSI delay values of NCSI signals;

The SMBUS signal of the platform control center on the motherboard is connected to the CPLD, and the SMBUS signal is used to transmit the ID of the PCIE device obtained from the BIOS;

Store the ID and NCSI delay value of the PCIE device in the FLASH of the CPLD;

Define the GPIO interface of CPLD, which is used to transmit the signal between BMC and CPLD.

Further, the NCSI signal of the BMC is connected to the CPLD of the main board, and the transmission of the NCSI signal to the network card PHY chip by the CPLD of the main board also includes:

If the current length of the NCSI cable is greater than the preset length threshold, a driver is provided between the CPLD and the PHY chip of the network card, and the NCSI signal transmission between the CPLD and the PHY chip of the network card is performed through the driver.

Further, the GPIO interface defining the CPLD includes:

Define the GPIO interface TXD0, TXD1, TXEN, RXD0, RXD1, CRSDV, REFCLK of CPLD as the signal interface between BMC and CPLD;

Define the GPIO interfaces TXD0_B, TXD1_B, TXEN_B, RXD0_B, RXD1_B, CRSDV_B, REFCLK_B of the CPLD as the signal interface between the CPLD and the driver.

Further, the NCSI signal of the BMC is connected to the CPLD of the main board, and the transmission of the NCSI signal to the network card PHY chip by the CPLD of the main board also includes:

If the current length of the NCSI cable is greater than the preset length threshold, the CPLD and the PHY chip of the network card are connected in series through a resistor.

Further, the GPIO interface defining the CPLD includes:

Define the GPIO interface TXD0, TXD1, TXEN, RXD0, RXD1, CRSDV, REFCLK of CPLD as the signal interface between BMC and CPLD;

Define the GPIO interfaces XD0_B, TXD1_B, TXEN_B, RXD0_B, RXD1_B, and CRSDV_B of the CPLD as the signal interface between the CPLD and the platform control center.

Further, the adjustment of the NCSI delay value through the CPLD, and the adaptation test of the network card after the adjustment is completed include the following steps:

Step 1: Receive the original data of the NCSI signal through the CPLD, and adjust the delay time of the clock relative to the original data of the NCSI signal by 0.1ns forward or backward as the current NCSI delay value;

Step 2: Issue a ping command through the BMC;

Step 3: Determine whether it can be pinged, if yes, go to step 4, if not, go to step 7;

Step 4: Start the stress test of the network card;

Step 5: Determine whether the stress test of the network card is passed, if so, go to step 6, otherwise, go to step 7;

Step 6: The CPLD saves the current NCSI delay value in the FLASH of the CPLD;

Step 7: Adjust the clock forward or backward by 0.1 ns based on the current delay time as the current NCSI delay value, and go to step 2.

Correspondingly, the present invention also discloses a system for automatically adjusting the NCSI signal of the network card, including:

The signal access unit is used to connect the NCSI signal of the BMC to the CPLD of the main board, and transmit the NCSI signal to the PHY chip of the network card through the CPLD of the main board;

The data reading unit is used to obtain the ID value of the network card from the BIOS through the CPLD;

A determination unit is used to judge whether the NCSI delay value of the network card is stored in the CPLD according to the ID value of the network card; a communication unit is used to adjust the NCSI timing according to the NCSI delay value, and establish communication between the network card and the BMC;

The signal adjustment unit is used to adjust the NCSI delay value through the CPLD, and perform an adaptation test of the network card after the adjustment is completed, and store the current NCSI delay value in the CPLD after the adaptation is successful.

Further, the signal access unit is specifically used for:

Set up the I2C signal connection between BMC and CPLD, and the I2C signal is used to transmit timing parameters and NCSI delay values of NCSI signals;

The SMBUS signal of the platform control center on the motherboard is connected to the CPLD, and the SMBUS signal is used to transmit the ID of the PCIE device obtained from the BIOS;

Store the ID and NCSI delay value of the PCIE device in the FLASH of the CPLD;

Define the GPIO interface of CPLD to transmit the signal between BMC and CPLD;

If the length of the current NCSI cable is greater than the preset length threshold, a driver is set between the CPLD and the PHY chip of the network card, and the NCSI signal transmission between the CPLD and the PHY chip of the network card is performed through the driver;

If the current length of the NCSI cable is greater than the preset length threshold, connect the CPLD and the PHY chip of the network card in series through a resistor.

Further, the signal conditioning unit is specifically used for:

Receive the original data of the NCSI signal through the CPLD, and delay the clock relative to the data by 0.1ns forward or backward by 0.1ns, and then the BMC sends a ping command, and if the ping is successful, the stress test of the network card is performed downward. After the stress test is passed, save the adjusted NCSI delay parameters in the FLASH of the CPLD through the CPLD. If the stress test of the network card fails, it means that the timing does not meet the requirements, continue to delay forward or backward, and add an adjustment interval of 0.1 ns to each adjustment based on the previous adjustment.

Correspondingly, the invention discloses a device for automatically adjusting the NCSI signal of the network card, comprising:

The memory is used to store the automatic adjustment program of the NCSI signal of the network card;

The processor is configured to implement the steps of the method for automatically adjusting the NCSI signal of the network card as described in any one of the above when executing the automatic adjustment program of the NCSI signal of the network card.

Correspondingly, the present invention discloses a readable storage medium, on which the automatic adjustment program of the NCSI signal of the network card is stored, and when the automatic adjustment program of the NCSI signal of the network card is executed by the processor, any of the above The steps of the method for automatically adjusting the NCSI signal of the network card described in the item.

Compared with prior art, the beneficial effect of the present invention is:

1. The present invention realizes the delay adjustment of the NCSI signal through the CPLD when the network card is adapted, and then stores the delay value in the FLASH of the CPLD. When using different network cards, CPLD will read the delay values corresponding to different network cards, so that the NCSI signal meets the setup hold time and keeps the network card communication normal.

2. The present invention adjusts the NCSI signal timing delay through the CPLD, and stores the adjustment parameters and the ID information of the network card in the FLASH one by one. After the system starts, the CPLD determines the delay value through the ID information of different network cards to realize Adaptation and normal communication of the network card.

3. The present invention can also be used in other low-speed signal applications where the delay needs to be adjusted.

It can be seen that, compared with the prior art, the present invention has outstanding substantive features and remarkable progress, and the beneficial effects of its implementation are also obvious.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Accompanying drawing 1 is method flowchart of the present invention;

Accompanying drawing 2 is the system structural diagram of the present invention.

In the figure, 1 is a signal access unit; 2 is a data reading unit; 3 is a judgment unit; 4 is a communication unit; 5 is a signal adjustment unit.

Detailed ways

The core of the present invention is to provide a method for automatically adjusting the NCSI signal of the network card. In the prior art, the BMC generally has two network interfaces, one is used for a dedicated network management port and is connected to the RJ45; the other is used as a shared network port Connect to the PCIE network card or the OCP network card. The NCSI signal of the BMC is directly connected to the PHY of the network card through a cable, or connected to the PHY of the network card through a switch through a cable. However, due to the long NCSI traces on the motherboard and the network card, and the fixed NCSI link parameters, that is, the delay value of the sequence is fixed, the setup and hold time of the NCS signal receiving end of the server does not meet the timing requirements, causing the network card to fail. Matching will fail.

And the automatic adjustment method of network card NCSI signal that the present invention provides, at first, the NCSI signal of BMC is connected on the CPLD of mainboard, transmits NCSI signal to network card PHY chip by the CPLD of mainboard. Then, obtain the ID value of the network card from the BIOS through the CPLD, and judge whether the NCSI delay value of the network card is stored in the CPLD according to the ID value of the network card. If yes, read the NCSI delay value, adjust the NCSI timing according to the NCSI delay value, and establish the communication between the network card and the BMC; if not, adjust the NCSI delay value through CPLD, and perform the adaptation test of the network card after the adjustment is completed. After success, store the current NCSI delay value in the CPLD. It can be seen that the present invention realizes the delay adjustment of the NCSI signal through the CPLD when the network card is adapted, and then stores the delay value in the FLASH of the CPLD. When using different network cards, CPLD will read the delay values corresponding to different network cards, so that the NCSI signal meets the setup hold time and keeps the network card communication normal.

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one:

As shown in Figure 1, the present embodiment provides a method for automatically adjusting the NCSI signal of the network card, including the following steps:

S1: Connect the NCSI signal of the BMC to the CPLD of the main board, and transmit the NCSI signal to the PHY chip of the network card through the CPLD of the main board.

At first, set up the I2C signal connection of BMC and CPLD, and described I2C signal is used for the timing parameter of transmission NCSI signal and NCSI delay value; Transmit the ID of the PCIE device obtained from the BIOS; among them, store the ID of the PCIE device and the NCSI delay value in the FLASH of the CPLD; finally, define the GPIO interface of the CPLD for transmitting signals between the BMC and the CPLD.

Because it is necessary to determine whether the CPLD and the network card PHY need to be equipped with a driver (BUFFER chip) to transmit the NCSI signal according to the length of the NCSI cable. If the driver is not used, the resistor is directly connected in series to complete the transmission of the NCSI signal; therefore, CPLD The definition of the GPIO interface includes the following two situations:

(1) When matching with the driver, define CPLD’s GPIO interfaces TXD0, TXD1, TXEN, RXD0, RXD1, CRSDV, REFCLK as the signal interface between BMC and CPLD; define CPLD’s GPIO interfaces TXD0_B, TXD1_B, TXEN_B, RXD0_B, RXD1_B , CRSDV_B, REFCLK_B as the signal interface between CPLD and the driver.

(2) When the driver is not used, define CPLD’s GPIO interfaces TXD0, TXD1, TXEN, RXD0, RXD1, CRSDV, REFCLK as signal interfaces between BMC and CPLD; define CPLD’s GPIO interfaces XD0_B, TXD1_B, TXEN_B, RXD0_B, RXD1_B, CRSDV_B serve as signal interface between CPLD and platform control center.

S2: Obtain the ID value of the network card from the BIOS through the CPLD.

S3: Determine whether the NCSI delay value of the network card is stored in the CPLD according to the ID value of the network card, if yes, go to step S4, otherwise go to step S5.

S4: Read the NCSI delay value, adjust the NCSI timing according to the NCSI delay value, and establish communication between the network card and the BMC.

S5: Adjust the NCSI delay value through the CPLD, and perform an adaptation test of the network card after the adjustment is completed. After the adaptation is successful, store the current NCSI delay value in the CPLD.

Wherein, step S5 comprises the following steps:

Step 1: The original data of the NCSI signal is received through the CPLD, and the delay time of the clock relative to the original data of the NCSI signal is adjusted forward or backward by 0.1 ns as the current NCSI delay value.

Step 2: Issue a ping command through the BMC.

Step 3: Determine whether the ping is possible, if yes, go to step 4, if not, go to step 7.

Step 4: Start the stress test of the network card.

Step 5: Determine whether the stress test of the network card is passed, if so, go to step 6, otherwise, go to step 7.

Step 6: The CPLD saves the current NCSI delay value in the FLASH of the CPLD.

Step 7: Adjust the clock forward or backward by 0.1 ns based on the current delay time as the current NCSI delay value, and go to step 2.

This embodiment provides a method for automatically adjusting the NCSI signal of the network card. The NCSI signal timing delay is adjusted through the CPLD, and the adjustment parameters and the ID information of the network card are stored in the FLASH of the CPLD in one-to-one correspondence. After the system is started, the CPLD The delay value is determined through the ID information of different network cards, and then the adaptation and normal communication of the network cards are realized.

Embodiment two:

Based on the first embodiment, this embodiment also discloses a method for automatically adjusting the NCSI signal of the network card, including:

1. When the network card is in use, it is divided into the network card NCSI adaptation mode and the network card normal use mode. The network card adaptation mode is used to adjust the timing delay, and the network card normal mode is used for the normal communication of the network card. BMC can set the network card adaptation mode to automatic adaptation mode and manual adaptation mode.

2. After the BMC has set the manual adaptation mode, the engineer can manually set the NCSI delay parameters on the BMC management page. You can enter the delay adjustment interval as 0.1ns, 0.2ns, 0.3ns, etc., and the range of the delay adjustment, and transmit it through I2C Go to CPLD for corresponding adaptation operation. The BMC web page management interface can display the adjusted NCSI sequence diagram for reference. After the CPLD adaptation is completed, save the delay parameter in the flash, and the network card can communicate normally.

3. After the CPLD adaptation is completed, save the delay parameter in the FLASH of the CPLD, and the BMC will be set to the normal use mode of the network card, and the network card can communicate normally.

4. After the BMC sets the automatic adaptation mode, the CPLD judges whether there is a corresponding network card NCSI delay value through the ID value of the network card obtained from the BIOS.

5. If the corresponding NCSI delay value is stored in the FLASH of the CPLD, the CPLD works in the normal mode of the network card, read the NCSI delay value, and the network card will communicate normally.

6. If there is no corresponding NCSI delay value in the CPLD's FLASH, then in the CPLD working network card adaptation mode, the CPLD collects the data signal sent from the network card. The delay is forward delay 0.1ns, or backward delay 0.1ns, and then the BMC sends a ping command, and if the ping is successful, the stress test of the network card is performed downward. After the stress test passes, the CPLD saves the adjusted NCSI delay parameters in the FLASH. If the stress test of the network card fails, it means that the timing does not meet the requirements, continue to delay forward or backward, and add an adjustment interval of 0.1 ns to each adjustment based on the previous adjustment. On the BMC management interface, you can manually modify the delay interval for each adjustment, as well as the overall adjustable delay range. The BMC transmits the adjustment parameters to the CPLD through I2C, and the CPLD transmits the final adjusted timing parameters to the BMC. The BMC management interface can view the drawn NCSI timing diagram. When the server inserts network cards of different manufacturers and models, the CPLD will store the manufacturer and model information of the network cards, and put them in a table with the adjusted delay value.

The above is the adaptation process of the network card. After the network card adaptation is completed, set the server to the normal use mode, and the CPLD will read the corresponding delay value of different network cards to adjust the NCSI timing to achieve stable and reliable operation of the network card.

Embodiment three:

Based on the above embodiment, as shown in Figure 2, this embodiment also discloses a system for automatically adjusting the NCSI signal of the network card, including a signal access unit 1, a data reading unit 2, a determination unit 3, a communication unit 4, and Signal Conditioning Unit 5.

The signal access unit 1 is used to connect the NCSI signal of the BMC to the CPLD of the main board, and transmit the NCSI signal to the PHY chip of the network card through the CPLD of the main board. The signal access unit 1 is specifically used for:

Establish the I2C signal connection between the BMC and the CPLD, the I2C signal is used to transmit the timing parameters and the NCSI delay value of the NCSI signal; the SMBUS signal of the platform control center on the motherboard is connected to the CPLD, and the SMBUS signal is used for transmission from the BIOS Get the ID of the PCIE device; store the ID of the PCIE device and the NCSI delay value in the FLASH of the CPLD; define the GPIO interface of the CPLD to transmit the signal between the BMC and the CPLD; if the length of the current NCSI cable is greater than the preset Length threshold, set a driver between the CPLD and the PHY chip of the network card, and transmit the NCSI signal between the CPLD and the PHY chip of the network card through the driver; if the length of the current NCSI cable is greater than the preset length threshold, connect the CPLD and the PHY chip of the network card in series through a resistor.

The data reading unit 2 is used for obtaining the ID value of the network card from the BIOS through the CPLD.

The determining unit 3 is configured to determine whether the NCSI delay value of the network card is stored in the CPLD according to the ID value of the network card.

The communication unit 4 is configured to adjust the NCSI timing according to the NCSI delay value, and establish the communication between the network card and the BMC.

The signal adjustment unit 5 is used to adjust the NCSI delay value through the CPLD, and perform an adaptation test of the network card after the adjustment is completed, and store the current NCSI delay value in the CPLD after the adaptation is successful.

The signal conditioning unit 5 is specifically used for:

Receive the original data of the NCSI signal through the CPLD, and delay the clock relative to the data by 0.1ns forward or backward by 0.1ns, and then the BMC sends a ping command, and if the ping is successful, the stress test of the network card is performed downward. After the stress test is passed, save the adjusted NCSI delay parameters in the FLASH of the CPLD through the CPLD. If the stress test of the network card fails, it means that the timing does not meet the requirements, continue to delay forward or backward, and add an adjustment interval of 0.1 ns to each adjustment based on the previous adjustment.

This embodiment provides an automatic adjustment system for the NCSI signal of the network card. When the network card is adapted, the delay adjustment of the NCSI signal is realized through the CPLD, and then the delay value is stored in the FLASH of the CPLD. When using different network cards, CPLD will read the delay values corresponding to different network cards, so that the NCSI signal meets the setup hold time and keeps the network card communication normal.

Embodiment four:

The present embodiment discloses a device for automatically adjusting the NCSI signal of the network card, including a processor and a memory; wherein, the processor implements the following steps when executing the automatic adjustment program of the NCSI signal of the network card stored in the memory:

S1: Connect the NCSI signal of the BMC to the CPLD of the main board, and transmit the NCSI signal to the PHY chip of the network card through the CPLD of the main board.

S2: The ID value of the network card obtained from the BIOS through the CPLD.

S3: Determine whether the NCSI delay value of the network card is stored in the CPLD according to the ID value of the network card, if yes, go to step S4, otherwise go to step S5.

S4: Read the NCSI delay value, adjust the NCSI timing according to the NCSI delay value, and establish communication between the network card and the BMC.

S5: Adjust the NCSI delay value through the CPLD, and perform an adaptation test of the network card after the adjustment is completed. After the adaptation is successful, store the current NCSI delay value in the CPLD.

Further, the automatic adjustment device of the network card NCSI signal in the present embodiment can also include:

The input interface is used to obtain the automatic adjustment program of the network card NCSI signal imported from the outside world, and save the obtained automatic adjustment program of the network card NCSI signal into the memory, and can also be used to obtain various instructions and information transmitted by the external terminal equipment. parameters, and transmit them to the processor, so that the processor can use the above-mentioned various instructions and parameters to carry out corresponding processing. In this embodiment, the input interface may specifically include, but not limited to, a USB interface, a serial interface, a voice input interface, a fingerprint input interface, a hard disk reading interface, and the like.

The output interface is used to output various data generated by the processor to a terminal device connected to it, so that other terminal devices connected to the output interface can obtain various data generated by the processor. In this embodiment, the output interface may specifically include but not limited to a USB interface, a serial interface, and the like.

The communication unit is used to establish a remote communication connection between the automatic adjustment device of the NCSI signal of the network card and the external server, so that the automatic adjustment device of the NCSI signal of the network card can mount the image file to the external server. In this embodiment, the communication unit may specifically include, but is not limited to, a remote communication unit based on wireless communication technology or wired communication technology.

The keyboard is used to obtain various parameter data or instructions input by the user by tapping the keycaps in real time.

The display is used for real-time display of relevant information in the process of locating the short circuit of the power supply line of the server.

The mouse can be used to assist the user to input data and simplify the user's operation.

This embodiment provides an automatic adjustment device for the NCSI signal of the network card, which effectively solves the problem that the timing delay of the NCSI cannot be automatically adjusted due to too long wires, which leads to the failure of adaptation between the server and the network card.

Embodiment five:

This embodiment also discloses a readable storage medium, where the readable storage medium includes random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, Registers, hard disks, removable hard disks, CD-ROMs or any other form of storage media known in the technical field. The automatic adjustment program of the NCSI signal of the network card is stored in the readable storage medium, and the automatic adjustment program of the NCSI signal of the network card is executed by the processor to realize the following steps:

S1: Connect the NCSI signal of the BMC to the CPLD of the main board, and transmit the NCSI signal to the PHY chip of the network card through the CPLD of the main board.

S2: The ID value of the network card obtained from the BIOS through the CPLD.

S3: Determine whether the NCSI delay value of the network card is stored in the CPLD according to the ID value of the network card, if yes, go to step S4, otherwise go to step S5.

S4: Read the NCSI delay value, adjust the NCSI timing according to the NCSI delay value, and establish communication between the network card and the BMC.

S5: Adjust the NCSI delay value through the CPLD, and perform an adaptation test of the network card after the adjustment is completed. After the adaptation is successful, store the current NCSI delay value in the CPLD.

This embodiment provides a readable storage medium. The automatic adjustment program of the network card NCSI signal stored in the readable storage medium realizes the adjustment of the timing delay of the NCSI signal through the CPLD, and the adjustment parameters and the ID information of the network card one by one Correspondingly stored in FLASH, after the system starts, the CPLD determines the delay value through the ID information of different network cards, so as to realize the adaptation and normal communication of the network cards.

In addition, the present invention can also be used in other application occasions where delay adjustment is required for low-speed signals.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other. As for the method disclosed in the embodiment, since it corresponds to the system disclosed in the embodiment, the description is relatively simple, and for related parts, please refer to the description of the method part.

Professionals can further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the possible For interchangeability, in the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

In the several embodiments provided by the present invention, it should be understood that the disclosed system, system and method can be implemented in other ways. For example, the system embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of systems or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, or each module may physically exist separately, or two or more modules may be integrated into one unit.

Similarly, each processing unit in each embodiment of the present invention may be integrated into one functional module, or each processing unit may exist physically, or two or more processing units may be integrated into one functional module.

The steps of the methods or algorithms described in connection with the embodiments disclosed herein may be directly implemented by hardware, software modules executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other Any other known storage medium.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The method, system, device and readable storage medium for automatically adjusting the NCSI signal of the network card provided by the present invention are described above in detail. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (8)

1. an automatic adjustment method of network card NCSI signal, it is characterized in that, comprising: Connect the NCSI signal of the BMC to the CPLD of the main board, and transmit the NCSI signal to the PHY chip of the network card through the CPLD of the main board; Obtain the ID value of the network card from the BIOS through CPLD; Determine whether the NCSI delay value of the network card is stored in the CPLD according to the ID value of the network card; If yes, read the NCSI delay value, adjust the NCSI timing according to the NCSI delay value, and establish the communication between the network card and the BMC; If not, adjust the NCSI delay value through the CPLD, and perform an adaptation test of the network card after the adjustment is completed. After the adaptation is successful, store the current NCSI delay value in the CPLD; The described NCSI signal of BMC is connected on the CPLD of mainboard, and the NCSI signal transmission to network card PHY chip by the CPLD of mainboard specifically includes: Set up the I2C signal connection between BMC and CPLD, and the I2C signal is used to transmit timing parameters and NCSIdelay values of NCSI signals; The SMBUS signal of the platform control center on the motherboard is connected to the CPLD, and the SMBUS signal is used to transmit the ID of the PCIE device obtained from the BIOS; Store the ID and NCSI delay value of the PCIE device in the FLASH of the CPLD; Define the GPIO interface of CPLD to transmit the signal between BMC and CPLD; The adjustment of the NCSI delay value carried out by the CPLD, and after the adjustment is completed, the adaptation test of the network card includes the following steps: Step 1: Receive the original data of the NCSI signal through the CPLD, and adjust the delay time of the clock relative to the original data of the NCSI signal by 0.1ns forward or backward as the current NCSI delay value; Step 2: Issue a ping command through the BMC; Step 3: Determine whether it can be pinged, if yes, go to step 4, if not, go to step 7; Step 4: Start the stress test of the network card; Step 5: Determine whether the stress test of the network card is passed, if so, go to step 6, otherwise, go to step 7; Step 6: The CPLD saves the current NCSI delay value in the FLASH of the CPLD; Step 7: Adjust the clock forward or backward by 0.1 ns based on the current delay time as the current NCSI delay value, and go to step 2. 2. the automatic adjustment method of network card NCSI signal according to claim 1, it is characterized in that, described NCSI signal of BMC is inserted on the CPLD of mainboard, transmits NCSI signal to network card PHY chip by the CPLD of mainboard also comprises: If the current length of the NCSI cable is greater than the preset length threshold, a driver is provided between the CPLD and the PHY chip of the network card, and the NCSI signal transmission between the CPLD and the PHY chip of the network card is performed through the driver. 3. the automatic adjustment method of network card NCSI signal according to claim 2, is characterized in that, the GPIO interface of described definition CPLD comprises: Define the GPIO interface TXD0, TXD1, TXEN, RXD0, RXD1, CRSDV, REFCLK of CPLD as the signal interface between BMC and CPLD; Define the GPIO interfaces TXD0_B, TXD1_B, TXEN_B, RXD0_B, RXD1_B, CRSDV_B, REFCLK_B of the CPLD as the signal interface between the CPLD and the driver. 4. the automatic adjustment method of network card NCSI signal according to claim 1, it is characterized in that, described NCSI signal of BMC is inserted on the CPLD of mainboard, transmits NCSI signal to network card PHY chip by the CPLD of mainboard also comprises: If the current length of the NCSI cable is greater than the preset length threshold, connect the CPLD and the PHY chip of the network card in series through a resistor. 5. the automatic adjustment method of network card NCSI signal according to claim 4, is characterized in that, the GPIO interface of described definition CPLD comprises: Define the GPIO interfaces XD0_B, TXD1_B, TXEN_B, RXD0_B, RXD1_B, and CRSDV_B of the CPLD as the signal interface between the CPLD and the platform control center. 6. an automatic adjustment system of network card NCSI signal, is characterized in that, comprises: The signal access unit is used to connect the NCSI signal of the BMC to the CPLD of the main board, and transmit the NCSI signal to the PHY chip of the network card through the CPLD of the main board; The data reading unit is used to obtain the ID value of the network card from the BIOS through the CPLD; A determination unit is used to judge whether the NCSI delay value of the network card is stored in the CPLD according to the ID value of the network card; a communication unit is used to adjust the NCSI timing according to the NCSI delay value, and establish communication between the network card and the BMC; The signal adjustment unit is used to adjust the NCSI delay value through the CPLD, and perform the adaptation test of the network card after the adjustment is completed, and store the current NCSI delay value in the CPLD after the adaptation is successful; The signal access unit is specifically used for: Set up the I2C signal connection between BMC and CPLD, and the I2C signal is used to transmit timing parameters and NCSIdelay values of NCSI signals; The SMBUS signal of the platform control center on the motherboard is connected to the CPLD, and the SMBUS signal is used to transmit the ID of the PCIE device obtained from the BIOS; Store the ID and NCSI delay value of the PCIE device in the FLASH of the CPLD; Define the GPIO interface of CPLD to transmit the signal between BMC and CPLD; The signal conditioning unit is specifically configured to perform the following steps: Step 1: Receive the original data of the NCSI signal through the CPLD, and adjust the delay time of the clock relative to the original data of the NCSI signal by 0.1ns forward or backward as the current NCSI delay value; Step 2: Issue a ping command through the BMC; Step 3: Determine whether it can be pinged, if yes, go to step 4, if not, go to step 7; Step 4: Start the stress test of the network card; Step 5: Determine whether the stress test of the network card is passed, if so, go to step 6, otherwise, go to step 7; Step 6: The CPLD saves the current NCSI delay value in the FLASH of the CPLD; Step 7: Adjust the clock forward or backward by 0.1 ns based on the current delay time as the current NCSI delay value, and go to step 2. 7. an automatic adjustment device of network card NCSI signal, it is characterized in that, comprising: The memory is used for the automatic adjustment program of the NCSI signal of the network card; The processor is configured to implement the steps of the method for automatically adjusting the NCSI signal of the network card according to any one of claims 1 to 5 when executing the program for automatically adjusting the NCSI signal of the network card. 8. A readable storage medium, characterized in that: the readable storage medium is stored with an automatic adjustment program of the NCSI signal of the network card, and when the automatic adjustment program of the NCSI signal of the network card is executed by a processor, it is realized as claimed in claim 1 to 5. The steps of the method for automatically adjusting the NCSI signal of the network card according to any one of claims.