TWI815255B - Detection method of riser board - Google Patents

Abstract

A detection method of riser board is implemented by a baseboard management controller(BMC) and includes: pre-storing a lookup table and a bus number for each connector; scanning every I2C bus; determining whether a response signal of each I2C bus device electrically connected to each I2C bus is received, and obtaining the bus number corresponding to each I2C bus and a device address of the I2C bus device; searching for an riser board model corresponding to the bus number and the device address in the lookup table, and determining the riser board model corresponding to a riser board connected to the I2C bus.

Description

Detection method of adapter board

The present invention relates to a detection method, in particular to a detection method of an adapter board.

An existing server includes a motherboard, a baseboard management controller disposed on the motherboard, a plurality of riser boards (Riser Boards) detachably inserted on the motherboard, and riser boards respectively disposed on the riser boards. Multiple integrated circuit bus (Inter-Integrated Circuit Bus, referred to as I2C) devices. The number of these adapter boards is, for example, two. Although the appearance of the two adapter boards is the same, due to the different types of the two adapter boards (for example: the two adapter boards have different models), the corresponding The positions of the two connectors to be plugged into the motherboard cannot be exchanged with each other, so that the baseboard management controller can communicate with the adapter board according to rules corresponding to the type of the adapter board. Therefore, in the process of manufacturing and assembling the server, how to identify whether it has been installed correctly has become an important issue.

The first known method is to occupy one of the two connectors pins, and are respectively electrically connected to a pull-up resistor on the two adapter boards to a voltage of logic 1 and a pull-down resistor to the ground potential, so that the baseboard management controller detects the two The logic value of the pin is used to know whether the two adapter boards are installed in the correct position, and the pin of each connector that is electrically connected to the pull-up resistor or the pull-down resistor is specially reserved for transmitting the corresponding Logical values are provided to the basic management controller for judgment. In other words, each connector must be able to provide an additional pin on the original transmission interface to implement this approach. The second conventional method is to store a different identification number in two electronically erasable rewritable read-only memories (EEPROM) on the two adapter boards, so that the baseboard management controller detects the The two identification serial numbers of the two electronically erasable rewritable read-only memories can be correctly identified and obtained. However, the first method requires additional connector pins, while the second method requires the two electronically erasable rewritable read-only memories to burn different data contents and be correctly installed on the corresponding adapter board. superior. Therefore, whether there are other simpler and more convenient detection methods has become a problem to be solved.

Therefore, the object of the present invention is to provide a simple and convenient method for detecting an adapter board.

Therefore, the present invention provides a method for detecting an adapter board, which is suitable for a computer device. The computer device includes a motherboard, a baseboard management controller disposed on the motherboard, and multiple circuit breakers that are detachably disposed on the motherboard. Multiple adapter boards for connectors, And a plurality of integrated circuit (Inter-Integrated Circuit, I2C) bus devices respectively provided on the adapter boards. The baseboard management controller is electrically connected to the connectors through a plurality of I2C buses, and then is electrically connected to the I2C bus devices on the adapter boards on the motherboard. The detection method of the adapter board includes steps (A) ~ (D).

In step (A), the baseboard management controller pre-stores a comparison table and a bus number for each connector. The comparison table includes multiple adapter board models, multiple I2C bus numbers, and multiple Correspondence between I2C addresses (Address).

In step (B), each I2C bus is scanned by the baseboard management controller.

In step (C), the baseboard management controller determines whether a response signal from each I2C bus device electrically connected to each I2C bus is received to obtain the corresponding I2C bus device. The bus number and a device address of the I2C bus device, and the response signal includes the device address.

In step (D), the baseboard management controller searches the comparison table for the adapter board model corresponding to the bus number and the device address, and determines that it corresponds to the adapter board connected to the I2C bus. The adapter board model.

In some implementations, in step (B), the baseboard management controller sends an IPMI command to each of the I2C buses.

In some implementations, in step (C), when each I2C When the bus device receives the IPMI command, it sends the response signal to the corresponding I2C bus. When the baseboard management controller determines that the response signal is received on the corresponding I2C bus, it determines the corresponding bus. The numbered address of the device.

In some implementations, in step (C), when the baseboard management controller determines that the response signal is not received at the corresponding I2C bus, it determines that the adapter board corresponding to the bus number has not received the response signal. settings.

In some implementations, the detection method of the adapter board also includes step (E) after step (D). The baseboard management controller also pre-stores a correct installation device position corresponding to each bus number. address, when the baseboard management controller determines that the device address corresponding to the bus number does not match the correctly installed device address, it determines that the adapter board corresponding to the bus number is installed incorrectly.

In some implementations, the detection method of the adapter board also includes step (F) after step (E). When the baseboard management controller determines that the adapter board corresponding to the bus number is installed incorrectly, an error occurs. A warning signal is sent to a test server to notify the test server of the incorrectly installed location of the adapter board.

The effect of the present invention is to use the comparison table pre-stored by the baseboard management controller to scan each I2C bus to obtain the device address of each I2C bus device, and search accordingly. Determine the adapter board model of the adapter board connected to each I2C bus.

1: Motherboard

11:Baseboard management controller

21, 22: Connector

3, 4: Adapter board

31, 41: I2C bus device

S1~S6: steps

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a block diagram illustrating a computer device to which the detection method of the adapter board of the present invention is applicable; and Figure 2 is a flow chart illustrating an embodiment of the detection method of the adapter board of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are designated with the same numbering.

Referring to Figures 1 and 2, one embodiment of the adapter board detection method of the present invention is applicable to a computer equipment. The computer equipment includes a motherboard 1 and a baseboard management controller (Baseboard management controller) disposed on the motherboard 1. controller (BMC) 11, a plurality of adapter boards 3 and 4 respectively detachably provided with a plurality of connectors 21 and 22 on the motherboard 1, and a plurality of adapter boards 3 and 4 respectively provided on the adapter boards 3 and 4. Integrated circuit (Inter-Integrated Circuit, hereinafter referred to as I2C) bus devices 31 and 41. When the adapter boards 3 and 4 are disposed at the connectors 21 and 22 respectively, the baseboard management controller 11 electrically connects the I2C buses through the connectors 21 and 22 through a plurality of I2C buses. Row devices 31, 41.

The riser boards 3 and 4 are also often called riser cards. In addition It is particularly noted that: for the convenience of explanation, in this embodiment and Figure 1, the connectors 21 and 22, the adapter boards 3 and 4, the I2C bus devices 31 and 41, and the The number of I2C buses is two as an example, but this is not a limit to the number.

The computer equipment is, for example, a server to be tested and is in the process of manufacturing and testing. The baseboard management controller 11 establishes a connection with a test server (not shown) through the network, and the test server Test instructions can be transmitted to the baseboard management controller 11 via the network, for example, instructing the baseboard management controller 11 to execute the detection method of the adapter board, and the baseboard management controller 11 receives the test results. The detection method of the adapter board includes steps S1~S6

In step S1, the baseboard management controller 11 pre-stores a comparison table, a bus number corresponding to each connector 21, 22, and a correct installation device address corresponding to each bus number. The comparison table includes correspondences between multiple adapter board models, multiple I2C bus numbers, and multiple I2C addresses, as shown in the following table (1). The two bus numbers of the two I2C buses to which the two connectors 21 and 22 are respectively electrically connected are #1 and #2 respectively. Next, step S1 is executed. In addition, it should be noted that the comparison table, the bus numbers, and the correct installation device addresses stored in the baseboard management controller 11 are, for example, distributed and stored in the baseboard management controller in the form of parameters. The firmware program of the controller 11 may, for example, be stored in a non-volatile device electrically connected to the baseboard management controller 11 In a memory (not shown), or, for example, it can be stored in a memory (not shown) inside the baseboard management controller 11 .

In step S2, each I2C bus is scanned by the baseboard management controller 11. More specifically, the baseboard management controller 11 sends an IPMI command to each I2C bus. The IPMI command is, for example, "i2cdetect-y 6", "i2cdetect-y 8", etc., indicating that the I2C bus numbered 6, the I2C bus numbered 8, etc. are scanned. Next, step S3 is executed.

In step S3, the baseboard management controller 11 determines whether a response signal from each I2C bus device 31, 41 electrically connected to each I2C bus is received, and obtains a response signal corresponding to each I2C bus. The bus number and a device address of the I2C bus device 31, 41, and the response signal includes the device address. Next, step S4 is executed.

More specifically, when each of the I2C bus devices 31 and 41 receives the IPMI command, it sends the response signal to the corresponding I2C bus, so that when the baseboard management controller 11 determines that the corresponding I2C bus is The I2C bus has received the response In response to the signal, the device address corresponding to the bus number of the I2C bus is determined. For example: the baseboard management controller 11 receives the response signal from the I2C bus device 31 via the I2C bus of bus number #1, and determines the device address corresponding to the bus number #1. 0x90.

When the baseboard management controller 11 determines that the response signal is not received at the corresponding I2C bus, it determines that the adapter boards 3 and 4 corresponding to the bus number are not installed. For example, in other embodiments, when the adapter board 3 is not disposed on the connector 21 , the baseboard management controller 11 will not receive the response via the I2C bus numbered #1. signal, it is determined that the adapter board 3 corresponding to the bus number #1 is not set.

In step S4, the baseboard management controller 11 searches the comparison table for the adapter board model corresponding to the bus number and the device address that received the response signal, and determines that it corresponds to the I2C bus connected. The model of the adapter board 3 and 4. Continuing the previous example, the baseboard management controller 11 searches for the adapter board model corresponding to the I2C bus number equal to the bus number #1 and the I2C address equal to the device address 0x90 in the comparison table, that is, Riser_R_G5.

In step S5, when the baseboard management controller 11 determines that the device address corresponding to the bus number does not match the correctly installed device address, it determines that the adapter boards 3 and 4 corresponding to the bus number are installed incorrectly. Continuing the previous example, for another example, the two correct installation device addresses corresponding to the two bus numbers #1 and #2 are respectively 0x98 and 0x90, the baseboard management controller 11 will determine that the adapter board 3 corresponding to the bus number #1 has an installation error. In addition, when one of the device address corresponding to the bus number and the correct installation device address is a null value (that is, not installed), and the other one is a numerical value (such as 0x98 in the previous example) ) (that is, installed), the baseboard management controller 11 will also determine that the two are inconsistent, and determine that the corresponding adapter boards 3 and 4 of the bus number are installed incorrectly.

In step S6, when the baseboard management controller 11 determines that the adapter boards 3 and 4 corresponding to the bus number are installed incorrectly, a warning signal is generated, and the warning signal is sent to the test server to notify the test The position of the adapter board 3 and 4 in which the server is installed incorrectly may be displayed, for example, on a monitor of the test server, or may further cause the test server to terminate the testing process of the computer equipment. Following the previous example, the baseboard management controller 11 can notify the test server that the adapter board 3 corresponding to the bus number #1 has an installation error. In addition, in other embodiments, when the baseboard management controller 11 determines that the adapter boards 3 and 4 corresponding to the bus number are installed incorrectly and generates the warning signal, it can also transmit the error message. The bus number, the connector on which the adapter plate is not installed on the computer equipment, and the current installation status of the incorrectly installed connector (for example, the connector is not installed or the incorrectly installed connector is currently installed). The adapter board model corresponding to the adapter board), the information of the adapter board model corresponding to the actually installed adapter board, and each of the connectors corresponding to the connector that is not installed or installed incorrectly. busbar The numbered address of the correct installation device corresponds to the adapter card model to help the installer correct the installation error more easily and intuitively.

In addition, it should be noted that the I2C bus devices 31 and 41 provided on any of the adapter boards 3 and 4 are, for example, an I2C multiplexer (MUX), a clock buffer (Clock buffer), a Temperature sensor (Thermal sensor), or other devices that support the I2C bus standard. Each of the I2C bus devices 31 and 41 includes a plurality of addressing pins for determining the corresponding device address, and each of the addressing pins is electrically connected to a pull-up resistor to a voltage of logic 1 or a voltage of logic 1. The resistor is pulled to the ground potential, and each of the I2C bus devices 31 and 41 can pre-define the device address corresponding to the logic value electrically connected to the addressing pins. For example, when the number of these addressing pins is 3 and the three electrically connected logic values are 100, the device address is 0x98. In other words, the present invention can obtain the device address and then the adapter board model through the addressing pins that the I2C bus devices 31 and 41 originally have. That is, compared with the conventional technology, In the first approach, the present invention does not need to occupy an additional pin of the connectors 21 and 22 .

In summary, through the comparison table pre-stored by the baseboard management controller 11, when scanning each I2C bus to obtain the device address of each I2C bus device 31, 41, it can be based on the comparison table. By searching and determining the adapter board models of the adapter boards 3 and 4 connected to each I2C bus, and then determining whether the installation is correct or incorrect, and reporting it to the test server, the invention can indeed be achieved. Purpose.

However, the above are only examples of the present invention. They cannot be used to limit the scope of the present invention. All simple equivalent changes and modifications made based on the patent scope of the present invention and the contents of the patent specification are still within the scope of the present invention. within the scope covered by the patent of this invention.

S1~S6: steps

Claims (6)

An adapter board detection method is applicable to a computer device. The computer device includes a motherboard, a baseboard management controller provided on the motherboard, and multiple connectors that are detachably provided on the motherboard. An adapter board, and a plurality of integrated circuit (Inter-Integrated Circuit, I2C) bus devices respectively provided on the adapter board, and the baseboard management controller is electrically connected to the plurality of I2C bus devices through a plurality of I2C bus devices. The connectors are then electrically connected to the I2C bus devices on the adapter boards provided on the motherboard. The detection method of the adapter board includes: (A) Pre-storing by the baseboard management controller A comparison table and a bus number for each connector. The comparison table includes correspondences between multiple adapter board models, multiple I2C bus numbers, and multiple I2C addresses; (B ) Scan each I2C bus through the baseboard management controller; (C) Determine whether a response from each I2C bus device electrically connected to each I2C bus is received through the baseboard management controller signal to obtain the bus number corresponding to each I2C bus and a device address of the I2C bus device, the response signal including the device address; and (D) through the baseboard management controller in the The comparison table searches for the adapter board model corresponding to the bus number and the device address, and determines it to be the adapter board model corresponding to the adapter board connected to the I2C bus. The detection method of the adapter board as described in claim 1, wherein in step (B), the baseboard management controller sends an IPMI command to each of the I2C bus. The detection method of the adapter board as described in claim 2, wherein in step (C), when each I2C bus device receives the IPMI command, it sends the response signal to the corresponding I2C bus device. row, when the baseboard management controller determines that the response signal is received at the corresponding I2C bus, it determines the device address corresponding to the bus number. The detection method of the adapter board as described in claim 3, wherein in step (C), when the baseboard management controller determines that the response signal is not received at the corresponding I2C bus, it determines whether the corresponding I2C bus The adapter board with row number is not set. The method for detecting an adapter board as described in claim 4 further includes step (E) after step (D). The baseboard management controller also pre-stores a correct installation device position corresponding to each bus number. address, when the baseboard management controller determines that the device address corresponding to the bus number does not match the correctly installed device address, it determines that the adapter board corresponding to the bus number is installed incorrectly. The detection method of the adapter board as described in claim 5 also includes step (F) after step (E). When the baseboard management controller determines that the adapter board corresponding to the bus number is installed incorrectly, an error occurs. A warning signal is sent to a test server to notify the test server of the incorrectly installed location of the adapter board.

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