CN117708004A - Method for reading information of adapter cards with different specifications and substrate management control module - Google Patents
Method for reading information of adapter cards with different specifications and substrate management control module Download PDFInfo
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- CN117708004A CN117708004A CN202211082372.4A CN202211082372A CN117708004A CN 117708004 A CN117708004 A CN 117708004A CN 202211082372 A CN202211082372 A CN 202211082372A CN 117708004 A CN117708004 A CN 117708004A
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Abstract
A reading method executed by a baseboard management control module includes: storing a lookup table with a data reading specification of each of a plurality of preset transfer cards and a plurality of bus addresses corresponding to a plurality of integrated circuit buses respectively; scanning a selected bus address to communicate with one of the adapter cards electrically connected to the corresponding integrated circuit bus and judging whether a slave address is obtained; if yes, reading one of the adapter cards according to a selected data reading standard to obtain identification information; judging whether the identification information accords with an FRU header format; and when the data read specification is judged to be met, reading one of the adapter cards according to the selected data read specification to obtain FRU information.
Description
[ field of technology ]
The present invention relates to a method and a module, and more particularly to a method for reading information of a plurality of cards and a baseboard management control module.
[ background Art ]
The baseboard management control module in the existing host computer is only suitable for reading the required field replaceable unit (field replaceable unit, FRU) information from a PCIE switching card of a single specification, so when the host computer is plugged into another PCIE switching card of a different specification, the baseboard management control module cannot successfully read the FRU information from the another PCIE switching card, that is, the baseboard management control module cannot dynamically support information reading on multiple PCIE switching cards, which leads to a need for a program designer of a related manufacturer to redesign a new baseboard management control module for the another PCIE switching card. Therefore, how to make the baseboard management control module dynamically read the FRU information of multiple PCIE switching cards is a problem that the related industry needs to solve.
[ invention ]
It is therefore an object of the present invention to provide a method for reading information from a plurality of cards of different specifications, which overcomes the drawbacks of the prior art.
Thus, the method for reading information of the switch cards with different specifications is executed by a baseboard management control module, the baseboard management control module comprises a system management Bus controller, each switch card and the system management Bus controller are electrically connected by an integrated circuit Bus (Inter-Integrated Circuit Bus, I2C Bus), and the system management Bus controller communicates with each switch card by an I2C protocol, the method for reading information comprises the following steps:
(A) Storing a lookup table and a plurality of bus addresses by using the baseboard management control module, wherein the lookup table contains a data reading standard of each of a plurality of preset transfer cards, and the bus addresses respectively correspond to the integrated circuit buses;
(B) Scanning a selected bus address by the baseboard management control module to be communicated with one of the transfer cards electrically connected with the integrated circuit bus corresponding to the selected bus address, wherein the selected bus address is one of the bus addresses;
(C) Judging whether a Slave address is obtained from one of the transfer cards by utilizing the baseboard management control module;
(D) When the judgment result of the step (C) is yes, reading a memory of one of the adapter cards by using the baseboard management control module according to a selected data reading specification, so as to obtain identification information of the one of the adapter cards, wherein the selected data reading specification is one of the data reading specifications of the lookup table;
(E) Judging whether the identification information accords with an FRU Header format (Header) by utilizing the baseboard management control module; and
(F) And (E) when the judgment result of the step is yes, the substrate management control module is utilized to read the memory of the adapter card according to the selected data reading standard so as to obtain FRU information.
It is therefore another object of the present invention to provide a baseboard management control module that overcomes the shortcomings of the prior art.
Thus, the invention discloses a baseboard management control module, which contains a system management bus controller, a memory, and a baseboard management control unit.
The system management Bus controller is electrically connected with each transfer card by an integrated circuit Bus (Inter-Integrated CircuitBus, I2C Bus) and communicates with each transfer card by an I2C protocol.
The memory stores a lookup table and a plurality of bus addresses, the lookup table contains a data reading specification of each of a plurality of preset transfer cards, and the bus addresses respectively correspond to the integrated circuit buses.
The baseboard management control unit is electrically connected with the storage to read the lookup table and the bus addresses, and is electrically connected with the system management bus controller to read each transfer card, scans a selected bus address to make a channel with one of the transfer cards electrically connected with the integrated circuit bus corresponding to the selected bus address, and judges whether a Slave address is obtained, wherein the selected bus address is one of the bus addresses, and the Slave address is related to the one of the transfer cards. When the judging result is that the subordinate address is obtained, the baseboard management control unit reads a memory of one of the transfer cards according to a selected data reading standard to obtain identification information of the one of the transfer cards, judges whether the identification information accords with a FRU Header format, and reads the memory of the one of the transfer cards according to the selected data reading standard to obtain FRU information when the judging result is that the identification information accords with the FRU Header format.
Compared with the prior art, the method for reading the information of the transfer cards with different specifications and the baseboard management control module are characterized in that the lookup table and the bus addresses are stored, so that the baseboard management control module can read the FRU information of each transfer card by searching the transfer cards according to the data reading specifications of the lookup table, and therefore, the invention does not need to redesign a new baseboard management control module for the transfer cards with different specifications as in the prior art, saves cost and is convenient for users to use.
[ description of the drawings ]
Other features and advantages of the invention will be apparent from the following description of the embodiments with reference to the accompanying drawings, in which:
FIG. 1 is a block diagram illustrating a baseboard management control module to which the method for reading information of different specifications of the adapter card of the present invention is applied; and
Fig. 2 and 3 are flowcharts illustrating an embodiment of a method for reading information of a riser card according to the present invention.
[ detailed description ] of the invention
Referring to fig. 1, an embodiment of the baseboard management control module 10 of the present invention is suitable for a host computer (not shown), and the information of the switch cards 11, 12, 13 with different specifications (fig. 1 is an example of three switch cards, but is not limited thereto). Each of the adapter cards 11-13 is a PCIE (PCI Express) card. The baseboard management control module 10 includes a system management bus Controller (System ManagementBus Controller, SMBus Controller) 2, a storage 3, and a baseboard management control Unit (BaseboardManagement Control Unit, BMC Unit) 4.
The system management Bus controller 2 is electrically connected with each of the switch cards 11 to 13 through an integrated circuit Bus (Inter-Integrated CircuitBus, I2C Bus)/system management Bus (System Management Bus, SMBus), and communicates with the switch cards 11 to 13 through an integrated circuit Protocol (Inter-Integrated CircuitProtocol, I2C Protocol)/system management Bus Protocol (System Management Bus Protocol, SMBus Protocol), wherein the integrated circuit Protocol is hereinafter referred to as I2C Protocol, and the integrated circuit Bus is hereinafter referred to as I2C Bus; the system management bus controller 2 and each of the switch cards 11-13 are electrically connected by the I2C bus and the I2C protocol is used for communication with the switch cards 11-13.
The memory 3 stores a lookup table and a plurality of bus addresses. The lookup table contains a data reading specification corresponding to each of a plurality of preset memory formats respectively adopted by a plurality of preset switch cards (i.e. the switch cards 11-13, but not limited thereto). The bus addresses correspond to the I2C buses respectively. Each data reading specification comprises information such as a data reading unit, an offset position, a header size (the memory size occupied by the header data) and the like. In this embodiment, each data reading unit reads data from the corresponding one of the predetermined cards in units of, for example, one byte (1 byte), two bytes (2 bytes), or other memory lengths. The offset position is related to whether offset shift (offset shift) is needed for reading data of the corresponding one of the preset switches. The data reading unit and the offset position of each pen change along with the change of the preset memory format of a corresponding one of the preset transfer cards corresponding to each data reading standard, wherein the preset memory formats corresponding to the preset transfer cards respectively have the same data reading unit but different offset positions; or vice versa, some of the predetermined memory formats have the same offset but different data reading units; or, the preset memory formats corresponding to the preset transfer cards have different data reading units and different offset positions.
The baseboard management control unit 4 is electrically connected to the memory 3 to read the lookup table and the bus addresses, and electrically connected to the system management bus controller 2 to read each of the cards 11-13, for example, the baseboard management control unit 4 causes the system management bus controller 2 to switch access and read each of the cards 11-13 in a polling manner, whereby the baseboard management control unit 4 can indirectly access/read each of the cards 11-13 in a polling manner according to the lookup table and the bus addresses.
Referring further to fig. 2 and 3, the baseboard management control module 10 can obtain information of a field replaceable unit (Field Replaceable Unit, FRU) of each of the cards 11-13 by executing the method for reading information of cards of different specifications according to the present invention. The reading method comprises the following steps.
In step 50, the memory 3 of the baseboard management control module 10 stores the lookup table and the bus addresses.
In step 51, the baseboard management control unit 4 of the baseboard management control module 10 scans a selected bus address to make a channel with one of the switch cards 11-13 electrically connected to the I2C bus corresponding to the selected bus address. The selected bus address is one of the bus addresses.
In step 52, the baseboard management control unit 4 of the baseboard management control module 10 determines whether a Slave address (Slave address) is obtained from one of the cards 11 to 13. If yes, go to step 53; if not, step 54 is performed. It should be noted that, in this embodiment, if the baseboard management control unit 4 can obtain the slave address from the one of the switch cards 11 to 13, which represents that the one of the switch cards 11 to 13 supports the I2C protocol, further explaining that, when the one of the switch cards 11 to 13 electrically connected to the I2C bus corresponding to the selected bus address receives the access/poll from the baseboard management control unit 4, according to the specification of the I2C protocol, when the active device accesses/polls the slave device, the slave device accessed/polls the slave device returns a response message, the response message transmitted by the slave device includes the slave address corresponding to itself, so in this embodiment, if the one of the switch cards 11 to 13 supports the I2C protocol itself, the slave address stored by itself is returned to the baseboard management control unit 4 when responding to the baseboard management control unit 4.
In step 53, the baseboard management control unit 4 of the baseboard management control module 10 reads a memory 100 of one of the cards 11 to 13 according to a selected data reading specification to obtain an identification information of the one of the cards 11 to 13. The selected data read specification is one of the data read specifications of the lookup table. In the present embodiment, the memory 100 of one of the cards 11-13 is an eeprom (electric-Erasable Programmable Read-OnlyMemory, EEPROM).
In step 54, the bmc 4 of the bmc 10 selects one of the remaining bus addresses stored in the memory 3 as the selected bus address, wherein the remaining bus address is not yet selected as the selected bus address, i.e. the bus address in the lookup table not yet selected for step 51. In this embodiment, the baseboard management control unit 4 replaces the selected bus address in the previous step 51 with one of the remaining bus addresses, and performs step 51 again to scan the changed selected bus address to determine whether to obtain the subordinate address. The bmc 4 sequentially selects the bus addresses, but is not limited thereto, and in other embodiments, the bmc 4 randomly selects one of the remaining bus addresses as the selected bus address.
In step 55, the baseboard management control unit 4 of the baseboard management control module 10 determines whether the identification information conforms to an FRU Header format (Header format). If yes, go to step 56; if not, go to step 58, wherein the bmc 10 determines whether the identification information conforms to the FRU header format according to a predetermined header checksum (Default Check Sum) stored in the storage 3, and further illustrates that the bmc 4 of the bmc 10 compares the predetermined header checksum with a last byte (byte) of the identification information, and if so, determines that the identification information conforms to the FRU header format; otherwise, it is determined that the identification information does not conform to the FRU header format, which in this embodiment is generated by the BMC 4 according to a standard field replaceable Unit (Field Replaceable Unit, FRU) Specification (Spec) and pre-stored in the storage 3.
In step 56, the baseboard management control unit 4 of the baseboard management control module 10 reads the memory 100 of one of the switch cards 11-13 according to the selected data reading specification to obtain FRU information corresponding to the identification information, so that the baseboard management control unit 4 can perform a startup monitoring procedure according to the FRU information. In this embodiment, the FRU information is related to the product identifier, the product model, the component manufacturer, etc. of the one of the cards 11 to 13, and the corresponding identification information is a FRU header corresponding to the FRU information.
In step 57, the baseboard management control unit 4 of the baseboard management control module 10 determines whether the selected bus address currently scanned is the last bus address remaining in the bus addresses, that is, whether the baseboard management control unit 4 has scanned each of the bus addresses. If yes, ending; if not, go to step 54 again; in this embodiment, the baseboard management control unit 4 correspondingly stores a tag in the lookup table stored in the memory 3 for each of the bus addresses that have been scanned, and determines whether the selected bus address that has been scanned is the last bus address remaining in the bus addresses according to whether the bus address that has not been tagged (the bus address that has not been correspondingly stored) exists in the lookup table, if so, it indicates that the selected bus address that has been scanned is the last bus address remaining in the bus addresses; in another embodiment, the baseboard management control unit 4 scans each bus address in the lookup table sequentially, and the baseboard manager 4 determines whether the selected bus address scanned currently is the last bus address remaining in the bus addresses according to whether there is a next bus address in the lookup table, if there is no next bus address in the lookup table after the sorting of the selected bus address scanned currently, the selected bus address scanned currently is the last bus address remaining in the bus addresses.
In step 58, the baseboard management control unit 4 of the baseboard management control module 10 determines whether the selected data reading standard is the last data reading standard remaining in the data reading standards. If yes, go to step 59; if not, go to step 60. It should be noted that, the judging manner of the baseboard management control unit 4 to judge whether the current selected data reading specification is the last data reading specification remaining in the data reading specifications is similar to the judging manner of the baseboard management control unit 4 to judge whether the current scanned selected bus address is the last bus address remaining in the bus addresses, so that the description is omitted herein.
In step 59, the baseboard management control unit 4 of the baseboard management control module 10 records a read failure. Next, step 57 is performed.
In step 60, the baseboard management control unit 4 of the baseboard management control module 10 selects one of the data reading specifications stored in the storage 3 as the selected data reading specification, wherein the remaining data reading specification is not selected as the selected data reading specification, that is, the data reading specification stored in the storage 3 is not selected for step 53. In this embodiment, the baseboard management control unit 4 replaces the selected data reading standard in the previous step 53 with the remaining data reading standard in the data reading standards, and proceeds to step 53 again to read a memory of another one of the cards according to the selected data reading standard after the change, so as to obtain an identification information of the another one of the cards.
It should be noted that, in the present embodiment, in step 50, the lookup table and the bus addresses stored in the memory 3 are written in advance by the product developer. After the host computer is powered on, the baseboard management control module 10 performs steps 51 to 60 during its initialization.
In summary, since the memory 3 of the baseboard management control module 10 stores the lookup table and the bus addresses, when the baseboard management control module 10 executes the method for reading the information of the switch cards with different specifications according to the invention, the FRU information of each of the switch cards 11-13 can be read by searching the switch cards 11-13 according to the data reading specifications of the lookup table, so that the invention does not need to insert a single baseboard management control unit 4 into a switch card with a single specific specification memory as in the prior art, and when the memory switch card with different specifications is needed to be inserted, the firmware to be executed by the baseboard management control unit 4 in a new baseboard management control module needs to be redesigned. In addition, when a new adapter card is developed, the developer of the baseboard management control module 10 can directly accumulate and write the data reading specification of the new adapter card into the lookup table of the storage 3, without recompiling and writing and updating the firmware of the baseboard management control unit 4 to execute the operation with a tool, and waiting for the updating of the firmware of the baseboard management control unit 4 to restart the computer host, so that the working efficiency of the computer host is not in the best, and therefore, the baseboard management control module 10 can read the FRU information of the new adapter card, and the manufacturer does not need to replace the baseboard management control module 10 because the new adapter card is developed.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. The method is executed by a baseboard management control module, the baseboard management control module includes a system management Bus controller, each of the baseboard management control module and the system management Bus controller are electrically connected by an integrated circuit Bus (Inter-Integrated Circuit Bus, I2C Bus), and the system management Bus controller communicates with each of the baseboard management control module by an I2C protocol, the method is characterized in that: the reading method comprises the following steps:
(A) Storing a lookup table and a plurality of bus addresses by using the baseboard management control module, wherein the lookup table contains a data reading standard of each of a plurality of preset transfer cards, and the bus addresses respectively correspond to the integrated circuit buses;
(B) Scanning a selected bus address by the baseboard management control module to be communicated with one of the transfer cards electrically connected with the integrated circuit bus corresponding to the selected bus address, wherein the selected bus address is one of the bus addresses;
(C) Judging whether a Slave address is obtained from one of the transfer cards by utilizing the baseboard management control module;
(D) When the judgment result of the step (C) is yes, reading a memory of one of the adapter cards by using the baseboard management control module according to a selected data reading specification, so as to obtain identification information of the one of the adapter cards, wherein the selected data reading specification is one of the data reading specifications of the lookup table;
(E) Judging whether the identification information accords with an FRU Header format (Header) by utilizing the baseboard management control module; and
(F) And (E) when the judgment result of the step is yes, the substrate management control module is utilized to read the memory of the adapter card according to the selected data reading standard so as to obtain FRU information.
2. The method for reading information from different specifications of the riser card according to claim 1, wherein: each data reading specification comprises a data reading unit and an offset position.
3. The method for reading information from different specifications of the riser card according to claim 1, wherein: the method also comprises the following steps:
(G) And (C) when the judgment result of the step (C) is negative, selecting one of the remaining bus addresses from the bus addresses as the selected bus address by using the baseboard management control module, and repeating the step (B).
4. The method for reading information from different specifications of the riser card according to claim 1, wherein: the method also comprises the following steps:
(H) When the judging result of the step (E) is no, judging whether the current selected data reading standard is the last data reading standard in the data reading standards by utilizing the baseboard management control module; and
(I) And (D) when the judgment result of the step (H) is negative, selecting one of the remaining data reading specifications from the data reading specifications by using the baseboard management control module as the selected data reading specification, and repeating the step (D).
5. The method for reading information from different types of cards according to claim 4, wherein: the method also comprises the following steps:
(J) When the judgment result of the step (H) is yes, recording the reading failure by using the baseboard management control module;
(K) Judging whether the selected bus address scanned at present is the last bus address remained in the bus addresses by utilizing the baseboard management control module; and
And (L) when the judging result of the step (K) is negative, selecting one of the rest bus addresses from the bus addresses as the selected bus address by using the baseboard management control module, and repeating the step (B).
6. A base plate management control module, the information of the switching card of different specifications, characterized by: the baseboard management control module includes:
a system management Bus controller, which is electrically connected with each transfer card by an integrated circuit Bus (Inter-Integrated CircuitBus, I2C Bus) and communicates with each transfer card by an I2C protocol;
the memory stores a lookup table and a plurality of bus addresses, the lookup table contains a data reading standard of each of a plurality of preset transfer cards, and the bus addresses respectively correspond to the integrated circuit buses; and
A baseboard management control unit electrically connected with the memory to read the lookup table and the bus addresses, and electrically connected with the system management bus controller to read each transfer card, the baseboard management control unit scanning a selected bus address to make a channel with one of the transfer cards electrically connected with the integrated circuit bus corresponding to the selected bus address, and judging whether a Slave address (Slave address) is obtained, the selected bus address is one of the bus addresses, the Slave address is related to the one of the transfer cards;
when the judging result is that the subordinate address is obtained, the baseboard management control unit reads a memory of one of the transfer cards according to a selected data reading standard to obtain identification information of the one of the transfer cards, judges whether the identification information accords with a FRU Header format, and reads the memory of the one of the transfer cards according to the selected data reading standard to obtain FRU information when the judging result is that the identification information accords with the FRU Header format.
7. The baseboard management control module of claim 6, wherein: each data reading specification comprises a data reading unit and an offset position.
8. The baseboard management control module of claim 6, wherein: when the determination result is that the slave address is not obtained, the baseboard management control unit selects one of the rest bus addresses as the selected bus address, and scans the selected bus address after the change to determine whether the slave address is obtained.
9. The baseboard management control module of claim 6, wherein: when the judging result is that the FRU header format is not met, the baseboard management control unit judges whether the current selected data reading standard is the last data reading standard remained in the data reading standards, when the judging result is that the last data reading standard remained in the data reading standards is not met, the baseboard management control unit selects one of the remaining data reading standards from the data reading standards as the selected data reading standard, reads a memory of another one of the transfer cards according to the changed selected data reading standard to obtain identification information of the another one of the transfer cards, judges whether the identification information of the another one of the transfer cards meets the FRU header format, and reads the memory of the another one of the transfer cards according to the changed selected data reading standard when the judging result is met.
10. The baseboard management control module of claim 9, wherein: when the current selected data reading specification is determined to be the last data reading specification remaining in the data reading specifications, the baseboard management control unit records the reading failure, and determines whether the current scanned selected bus address is the last bus address remaining in the bus addresses, and
when judging that the selected bus address scanned at present is not the last bus address remained in the bus addresses, the baseboard management control unit selects one of the remained bus addresses from the bus addresses as the selected bus address, and scans the selected bus address after being changed to judge whether the subordinate address is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211082372.4A CN117708004A (en) | 2022-09-06 | 2022-09-06 | Method for reading information of adapter cards with different specifications and substrate management control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211082372.4A CN117708004A (en) | 2022-09-06 | 2022-09-06 | Method for reading information of adapter cards with different specifications and substrate management control module |
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| Publication Number | Publication Date |
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| CN117708004A true CN117708004A (en) | 2024-03-15 |
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| CN202211082372.4A Pending CN117708004A (en) | 2022-09-06 | 2022-09-06 | Method for reading information of adapter cards with different specifications and substrate management control module |
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| CN (1) | CN117708004A (en) |
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- 2022-09-06 CN CN202211082372.4A patent/CN117708004A/en active Pending
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