WO2023272989A1 - Bandwidth allocation method for ocp network card, and related apparatus - Google Patents

Abstract

Disclosed in the present application is a bandwidth allocation method for an OCP network card. The method comprises: acquiring type information of an OCP network card; setting a working mode of the OCP network card according to the type information and the number of CPUs; and controlling a PCIe bus connector according to the working mode, so as to allocate a bandwidth of the OCP network card, wherein the PCIe bus connector is a connector connected to a channel of the OCP network card. In the present application, type information of an OCP network card is first acquired, a suitable working mode is then set for the OCP network card on the basis of the type information combined with the number of CPUs, and finally a PCIe bus connector is controlled according to the working mode, such that a bandwidth of the OCP network card is allocated. Bandwidth configuration is not performed manually, thereby improving the configuration efficiency of the OCP network card. Further disclosed in the present application are a bandwidth allocation apparatus for an OCP network card, and a computing device and a computer-readable storage medium, which have the above beneficial effects.

Description

A bandwidth allocation method and related device of OCP network card

This application claims the priority of the Chinese patent application with the application number 202110744377.8 and the title of the invention "A Bandwidth Allocation Method for OCP Network Card and Related Devices" submitted to the China Patent Office on June 30, 2021, the entire contents of which are incorporated by reference in this application.

technical field

The present application relates to the field of computers, and in particular to an OCP network card bandwidth allocation method, a bandwidth allocation device, a computing device, and a computer-readable storage medium.

Background technique

With the continuous development of information technology, in order to improve the scalability of computing equipment, the Open Compute Project (Open Compute Project, referred to as OCP) has emerged to provide efficient and scalable server, storage and data center hardware design to reduce the cost of data centers. environmental impact.

In related technologies, a Root Port (root port) of a CPU (central processing unit, central processing unit) directly leads to a PCIe (peripheral component interconnect express, high-speed serial computer expansion bus standard) x16 to OCP NIC3.0, or from Each of the two CPUs is connected to a PCIe x8 to OCP NIC3.0. The connection mode is fixed, it can only support Single Host (stand-alone) or Multi-Host, and it cannot be flexibly switched between the two, and the Root Port used is occupied by OCP NIC3.0 and cannot be used for other purposes. If you need to configure the bandwidth of the OCP network card, you need to modify it manually, which is inefficient.

Therefore, how to enable the device to automatically switch between interfaces of different specifications instead of manually allocating bandwidth and improving the configuration efficiency of the OCP network card is a key issue that those skilled in the art pay attention to.

Contents of the invention

The purpose of this application is to provide a bandwidth allocation method for an OCP network card, a bandwidth allocation device, a computing device, and a computer-readable storage medium, so as to solve the problem of low efficiency of manual bandwidth allocation.

In order to solve the above technical problems, the application provides a bandwidth allocation method of an OCP network card, comprising:

Obtain the type information of the OCP network card;

Set the working mode of the OCP network card according to the type information and the number of CPUs;

The PCIe bus connector is controlled according to the working mode to realize the bandwidth allocation of the OCP network card; wherein, the PCIe bus connector is a connector connected with a channel of the OCP network card.

Optionally, obtain the type information of the OCP network card, including:

Obtain the PRSNTB[3:0]_N signal of the OCP network card;

The type information is determined according to the PRSNTB[3:0]_N signal.

Optionally, set the working mode of the OCP network card according to the type information and the number of CPUs, including:

When the number of CPUs is single, the operating mode of the OCP network card is set to the single CPU mode of the network card type corresponding to the type information;

When the number of CPUs is multiple, the working mode of the OCP network card is set to the multi-CPU mode of the network card type corresponding to the type information.

Optionally, set the working mode of the OCP network card according to the type information and the number of CPUs, including:

When the PRSNTB[3:0]_N signal is 0b1101 or 0b0110, the operating mode of the OCP network card is set to 2x8 configuration mode;

When the PRSNTB[3:0]_N signal is 0b1010 or 0b1001 or 0b0011, set the working mode of the OCP network card to 4x4 configuration mode.

Optionally, set the working mode of the OCP network card according to the type information and the number of CPUs, including:

matching the type information and the number of CPUs to a corresponding working mode according to the OCP specification table;

The working mode is set for the OCP network card.

Optionally, set the working mode of the OCP network card according to the type information and the number of CPUs, including:

Obtain the CPU_ID Pin signal, and determine the number of CPUs according to the CPU_ID Pin signal;

Set the working mode of the OCP network card according to the type information and the number of CPUs.

Optionally, the PCIe bus connector is controlled according to the working mode to realize the allocation of the bandwidth of the OCP network card, including:

Control the PCH to control the PCIe bus connector according to the working mode, so as to realize the allocation of the bandwidth of the OCP network card; wherein, the PCIe bus connector is arranged between the OCP network card and the CPU, and the PCH Connect with the PCIe bus connector.

The application also provides a bandwidth allocation device for an OCP network card, including:

A type acquisition module is used to obtain the type information of the OCP network card;

A mode setting module, configured to set the operating mode of the OCP network card according to the type information and the number of CPUs;

A connector control module, configured to control the PCIe bus connector according to the operating mode, so as to allocate the bandwidth of the OCP network card; wherein, the PCIe bus connector is connected to the channel of the OCP network card Connector.

The present application also provides a computing device, comprising:

memory for storing computer programs;

The processor is configured to implement the steps of the above-mentioned bandwidth allocation method when executing the computer program.

The present application also provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above bandwidth allocation method are implemented.

A bandwidth allocation method of an OCP network card provided by the application, comprising: obtaining the type information of the OCP network card; setting the operating mode of the OCP network card according to the type information and the number of CPUs; connecting the PCIe bus according to the operating mode The controller is used to control the bandwidth of the OCP network card; wherein, the PCIe bus connector is a connector connected to the channel of the OCP network card.

By first obtaining the type information of the OCP network card, and then combining the number of CPUs on the basis of the type information, setting an appropriate working mode for the OCP network card, and finally controlling the PCIe bus connector according to the working mode to realize the OCP network card Bandwidth allocation, instead of manual bandwidth configuration, improves the configuration efficiency of the OCP network card.

The present application also provides a bandwidth allocation device for an OCP network card, a computing device, and a computer-readable storage medium, which have the above beneficial effects and will not be repeated here.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application 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 application, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is the flowchart of the bandwidth allocation method of a kind of OCP network card provided by the embodiment of the present application;

FIG. 2 is a schematic structural diagram of a bandwidth allocation circuit provided by an embodiment of the present application;

Fig. 3 is the flowchart of the bandwidth allocation method of another kind of OCP network card provided by the embodiment of the present application;

FIG. 4 is a schematic structural diagram of an OCP network card bandwidth allocation device provided by an embodiment of the present application.

detailed description

The core of the present application is to provide a bandwidth allocation method for an OCP network card, a bandwidth allocation device, a computing device, and a computer-readable storage medium, so as to solve the problem of low efficiency in manual bandwidth allocation.

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In the related technology, one PCIe x16 is directly led to OCP NIC3.0 from one Root Port of the CPU, or one PCIe x8 is connected to OCP NIC3.0 from two CPUs respectively. The connection mode is fixed, it can only support Single Host or Multi-Host, and it cannot be flexibly switched between the two, and the Root Port used is occupied by OCP NIC3.0 and cannot be used for other purposes. If you need to configure the bandwidth of the OCP network card, you need to modify it manually, which is inefficient.

Among them, the OCP NIC (Network Interface Card, network interface card) 3.0 specification is the follow-up version of the OCP Mezz (mezzanine, intermediate connector) 2.0rev 1.00 design specification. Compared with the OCP Mezz card 2.0 design specification, the updated OCP NIC 3.0 has a wider application range and better use effect. Among them, OCP NIC3.0 can support Multi-host (multi-host) applications, that is, a network card can be flexibly configured as 1x16, 2x8, 4x4 according to needs, and connected to one or more uplinks to improve network configuration flexibility and transmission efficiency.

Therefore, the application provides a bandwidth allocation method of an OCP network card, by first obtaining the type information of the OCP network card, and then combining the CPU quantity on the basis of the type information, setting a suitable working mode for the OCP network card, and finally according to the work The mode controls the PCIe bus connector to realize the bandwidth allocation to the OCP network card, instead of using manual bandwidth configuration to improve the configuration efficiency of the OCP network card.

A method for allocating bandwidth of an OCP network card provided by the present application will be described below through an embodiment.

Please refer to FIG. 1 . FIG. 1 is a flowchart of a bandwidth allocation method for an OCP network card provided in an embodiment of the present application.

In this embodiment, the method may include:

S101, acquiring type information of the OCP network card;

It can be seen that the purpose of this step is to obtain the type information of the OCP network card, that is, to determine the type of the OCP network card, so as to determine the working mode of the OCP network card suitable for this type. That is to say, in this embodiment, different OCP network cards are connected, and each type of OCP network card has a different number of buses that can be connected and a number of CPUs that can be configured due to differences in hardware or software. Eventually, the bandwidth configuration of the OCP network card will change, for example, the number of buses in the bandwidth will change, or the number of CPUs connected to the bandwidth will change. Therefore, in this step, first determine the type information of the OCP network card.

Further, in this step, the type information can be determined by the PRSNTB[3:0]_N signal of the OCP network card, or the type information can be determined by BIOS (Basic Input Output System, basic input and output system), or the state of the OCP network card info determines the type of info. It can be seen that the method for determining this type of information in this step is not unique, and is not specifically limited here.

Further, in order to improve the efficiency of determining type information, this step may include:

Step 1, obtain the PRSNTB[3:0]_N signal of the OCP network card;

Step 2, determine the type information according to the PRSNTB[3:0]_N signal.

It can be seen that this optional solution mainly describes how to obtain this type of information. In this optional solution, first obtain the PRSNTB[3:0]_N signal of the OCP network card. Among them, the BIOS can obtain the PRSNTB[3:0]_N signal of the OCP network card, or the CPLD can obtain the PRSNTB[3:0]_N signal of the OCP network card, or the controller can obtain the PRSNTB[3:0] of the OCP network card _N signal, which is not specifically limited here. Then, type information is determined from the PRSNTB[3:0]_N signal. Specifically, the type information can be determined according to the OCP specification table and the PRSNTB[3:0]_N signal.

S102, setting the working mode of the OCP network card according to the type information and the number of CPUs;

On the basis of S101, this step aims to set the working mode of the OCP network card according to the type information and the number of CPUs. It can be seen that this step aims to set the working mode of the OCP network card according to the type information and the number of CPUs. Specifically, the number of CPUs may determine whether the OCP network card is executed in a multi-machine mode or a single-machine mode.

Further, in order to determine the working mode of the OCP network card according to the number of CPUs, this step may include:

When the number of CPUs is single, set the working mode of the OCP network card to the single CPU mode of the network card type corresponding to the type information;

When there are multiple CPUs, the working mode of the OCP network card is set to the multi-CPU mode of the network card type corresponding to the type information.

It can be seen that this optional solution mainly describes how to set the working mode. In this optional solution, when the number of CPUs is single, set the working mode of the OCP network card to the single-CPU mode of the network card type corresponding to the type information, that is, set the working mode of the OCP network card to the single-machine mode, that is, Single- Host. When there are multiple CPUs, set the working mode of the OCP network card to the multi-CPU mode of the network card type corresponding to the type information, that is, set the working mode of the OCP network card to the multi-machine mode, ie Multi-Host.

Further, in order to improve the refinement of setting the working mode, this step may include:

When the PRSNTB[3:0]_N signal is 0b1101 or 0b0110, set the working mode of the OCP network card to 2x8 configuration mode;

When the PRSNTB[3:0]_N signal is 0b1010 or 0b1001 or 0b0011, set the working mode of the OCP network card to 4x4 configuration mode.

It can be seen that this optional solution mainly describes how to set the working mode. In this option, when the PRSNTB[3:0]_N signal is 0b1101 or 0b0110, set the working mode of the OCP network card to 2x8 configuration mode; when the PRSNTB[3:0]_N signal is 0b1010 or 0b1001 or 0b0011, Set the working mode of the OCP network card to 4x4 configuration mode. It can be seen that in this optional solution, the specific content of the PRSNTB[3:0]_N signal is directly used to determine the working mode of the OCP network card.

Further, in order to improve the accuracy of determining the working mode, this step may include:

Step 1, match the corresponding working mode with the type information and the number of CPUs according to the OCP specification table;

Step 2, set the working mode for the OCP network card.

It can be seen that this optional solution mainly describes how to set the working mode. In this optional solution, the type information and the number of CPUs are matched to the corresponding working mode according to the OCP specification table; wherein, the OCP specification table is the bandwidth list shown in Table 1. Then, set the working mode for the OCP network card.

Further, in order to determine the current number of CPUs in the process of a specific embodiment, the number of CPUs can be determined through the CPU_ID Pin signal. Therefore, this step can include:

Step 1, obtain the CPU_ID Pin signal, and determine the number of CPUs according to the CPU_ID Pin signal;

Step 2, setting the working mode of the OCP network card according to the type information and the number of CPUs.

It can be seen that this optional solution mainly describes how to set the working mode. In this optional solution, the CPU_ID Pin signal is obtained, and the number of CPUs is determined according to the CPU_ID Pin signal. Among them, the CPU_ID Pin signal is a signal bit set on the connector of each CPU. For example, there are two CPUs, namely CPU0 and CPU1. When the cable is only connected to CPU0, the CPU_ID Pin signal corresponding to the CPU0 is obtained, and then the current number of CPUs is determined to be one. When the cable is connected to multiple CPUs, the CPU_ID Pin signals of two CPUs are obtained, and then it is determined that the current number of CPUs is multiple. Finally, set the working mode of the OCP network card according to the type information and the number of CPUs.

S103. Control the PCIe bus connector according to the working mode, so as to allocate the bandwidth of the OCP network card; wherein, the PCIe bus connector is a connector connected to the channel of the OCP network card.

On the basis of S102, this step aims to control the PCIe bus connector according to the working mode, so as to realize the bandwidth allocation of the OCP network card. Wherein, the PCIe bus connector is a connector connected with the channel of the OCP network card. That is, the PCIe bus connector is connected between the OCP network card and the CPU, and by controlling the PCIe bus connector, different channels can be closed and opened, thereby allocating bandwidth.

Further, this step may include:

The control PCH controls the PCIe bus connector according to the working mode to realize the bandwidth allocation of the OCP network card; wherein, the PCIe bus connector is arranged between the OCP network card and the CPU, and the PCH is connected to the PCIe bus connector.

Wherein, PCH (Platform Controller Hub) is a platform controller hub used to control the PCIe bus connector. Further, a PCIe bus connector may be connected to each CPU separately. Therefore, the PCH can interface with each PCIe bus connector for control.

In summary, the present embodiment obtains the type information of the OCP network card at first, and then combines the number of CPUs on the basis of the type information to set a suitable working mode for the OCP network card, and finally implements the PCIe bus connector according to the working mode. Control to realize the bandwidth allocation of the OCP network card, instead of using manual bandwidth configuration to improve the configuration efficiency of the OCP network card.

A method for allocating bandwidth of an OCP network card provided in this application will be further described below through a specific embodiment.

In this embodiment, the purpose is to provide a kind of OCP NIC3.0 bandwidth allocation method that can support Single-Host and Multi-Host at the same time, and can perform PCIe on OCP network card and CPU Root Port according to whether the actual connection is Single-Host or Multi-Host The method of bandwidth allocation.

The following table is a list of SFF OCP network cards listed in the OCP specification. It can be known from the following table that the model of the OCP network card and the supported bandwidth mode can be judged by the PRSNTB[3:0]_N signal, and the working mode of the OCP network card can be configured by configuring the BIF[2:0]_N signal.

Table 1 OCP network card PCIe bandwidth list

On the basis of the previous OCP network card PCIe bandwidth list, it can be thought that OCP PCIe lane0~7 is connected to CPU0, if OCP PCIe lane8~15 is connected to CPU1, then the BIF[2:0]_N of OCP is controlled by hardware line to 001; If OCP PCIe lanes 8~15 are also connected to lanes 8~15 of the CPU0 Root Port connected to OCP lanes 0~7, the CPLD will judge the type of the OCP NIC3.0 card according to the PRSNTB[3:0]_N of the OCP. If it is 2xn For the applied OCP network card (PRSNTB[3:0]_N is 0b1101, 0b0110), keep OCP BIF[2:0]_N as 001, otherwise control OCP BIF[2:0]_N as 000.

And through four ID Pins (1 by default) connected to the PCH to automatically configure the CPU PCIe Root Port for Bifurcation, except 0010 means that the entire Root Port should be configured as x16, 11 and 10 respectively represent the high eight bits of the corresponding PCIe lane or The lower eight bits are configured as x4x4, x8. By default, the ID of CPU0 Root Port lane 0~7 connected to OCP lane 0~7 is set to 10. If OCP_BIF[2:0]_N is 001, control the two ID Pins corresponding to the 8 lanes corresponding to OCP lanes 8 to 15 to be 10, that is, the configuration is x8. If OCP_BIF[2:0]_N is 000, then if OCP lanes 8~15 are connected to CPU0 Root Port lanes 8~15 to which OCP lanes 0~7 are connected, configure the two IDs corresponding to lanes 8~15 as 00 , together form a combination of 0010, that is, configure it as x16; if OCP lane 8~15 is connected to CPU1, configure the two IDs corresponding to lane8~15 as 10, that is, configure it as x8.

In addition, if the CPLD judges according to RRSNT[3:0]_N that it is a 4xn OCP network card (PRSNTB[3:0]_N is 0b1010, 0b1001, 0b0011), then by pulling down the Override_N Pin to the PCH, to notify the BIOS to ignore the ID Pin pair Automatic configuration of PCIe Root Port. CPU Root Port Bifurcation needs to be manually configured (default x4x4x4x4).

On the basis of the previous OCP network card PCIe bandwidth list, please refer to FIG. 2 , which is a schematic structural diagram of a bandwidth allocation circuit provided by an embodiment of the present application. Please refer to FIG. 3 . FIG. 3 is a flow chart of another OCP network card bandwidth allocation method provided by an embodiment of the present application.

Based on this circuit, the method of this embodiment may include:

S201, obtain the PRSNTB[3:0]_N signal of the OCP network card;

S202, set the operating mode of the OCP network card according to the PRSNTB[3:0]_N signal and the CPU_ID Pin signal, that is, set the BIF[2:0]_N signal of the OCP network card;

S203, control the ID Pin of the PCIe bus connector according to the BIF[2:0]_N signal, and realize the bandwidth allocation of the OCP network card; wherein, the PCIe bus connector is a connector connected to the channel of the OCP network card.

Among them, the ID Pin is the CPU0 RPBIF ID or CPU1 RPBIF ID in Figure 2. PCIe bus connectors include OCP Slimline (miniature interface) connector, CPU0 Slimline connector, CPU1 Slimline A, and CPU1 Slimline B.

Among them, lanes (channels or bus channels) 0-7 of OCP NIC3.0 are connected to a Root Port lane 0-7 of CPU0, lanes 8-15 of OCP NIC3.0 are connected to an OCP Slimline connector, and the above-mentioned Root Port lane 8 of CPU0 ~15 is connected to a CPU0 Slimline connector, and Root Port lane0~7 and lane8~15 of CPU1 are connected to CPU1 Slimline A and CPU1 Slimline B respectively. Lanes8~15 of OCP NIC3.0 can be connected to any one of CPU0 Slimline, CPU1 Slimline A, and CPU1 Slimline B through a Slimline cable.

There is a CPU_ID Pin on each Slimline, which is used to judge whether the OCP Slimline is connected to the Slimline of CPU0 or the Slimline of CPU1. On the OCP Slimline side, the CPU_ID Pin is pulled up to 1 by default; on the CPU side, the CPU0 Slimline CPU_ID is 0, and the CPU1 Slimline CPU_ID is Floating. Therefore, when OCP Slimline is connected to CPU0 Slimline, CPU_ID will be pulled down to 0, and when connected to CPU1 Slimline, it will remain at 1.

There are two ID Pins on each Slimline. If the Slimline of the CPU corresponds to lane0~lane7 of the CPU, the ID Pin corresponds to ID1 and ID0; if it corresponds to lane8~lane15 of the CPU, the ID Pin corresponds to ID3 and ID2. The ID Pin of the CPU Slimline is pulled up to 1 by default, and connected to the PCH, which is used by the BIOS for CPU Root Port bandwidth allocation.

The corresponding relationship between ID[3:0] and PCIe Root Port Bifurcation is as follows.

Table 2 PCIe Root Port Bifurcation ID setting table

ID3	ID2	ID1	ID0	PCIe Root Port Bifurcation
1	1	1	1	x4x4x4x4
1	1	1	0	x4x4x8
1	0	1	1	x8x4x4
1	0	1	0	x8x8
0	0	1	0	x16

Since CPU0lane0~7 in this embodiment are connected to OCP lane0~7 by default, the ID[1:0] corresponding to the Root Port is directly set to 10. The low bits of the two ID Pins on the OCP Slimline (corresponding to ID2 or ID0 on the CPU side) are fixed at 0, and the high bits (corresponding to ID3 or ID1 on the CPU side) are connected to CPU_ID through Logic IC B. Logic IC B is controlled by OCP_BIF0_N: if OCP_BIF0_N is 0, the ID Pin and CPU_ID Pin on OCP Slimline are determined; if OCP BIF0_N is 1, then OCP Slimline gives the ID combination (ID[3:2] or ID [1:0]) is always 10.

Therefore, BIF2_N and BIF1_N of OCP NIC3.0 are directly pulled down to 0, BIF0_N is pulled up by default, and connected to the output CPLD_BIF0_N of CPLD through Logic IC A. Logic IC A is controlled by CPU_ID Pin, if CPU_ID is 0, Logic IC A is turned on, and OCP_BIF0_N is determined by CPLD_BIF0_N. If CPU_ID is 1, both ends of Logic IC A are disconnected, and OCP_BIF0_N is always 1.

For CPLD, OCP PRSNTB[3:0]_N is input to CPLD, CPLD judges the state of PRSNTB[3:0]_N, controls the output of CPLD_BIF0_N, CPU_RP_Override_N, where CPU_RP_Override_N is connected to PCH, when CPU_RP_Override_N is 0, used for Inform the BIOS that the currently inserted card cannot automatically configure the PCIe Root Port Bifurcation based on the ID Pin, and needs to be manually configured on the BIOS Setup page.

When the CPLD detects that PRSNTB[3:0]_N is 0b1101 or 0b0110, it can be seen from Table 1 and the OCP detailed specification that the OCP network card corresponds to the 2x8 configuration mode in these two cases, so the output CPLD_BIF0_N is 1 to ensure that regardless of the OCP Slimline Connected to CPU0 Slimline or CPU1 Slimline, both can ensure that OCP_BIF0_N is 1, and then ensure that the ID Pin used by OCP Slimline for Root Port bandwidth allocation is configured as 10.

When the CPLD detects that PRSNTB[3:0]_N is 0b1010, 0b1001, or 0b0011, it can be seen from Table 1 and the OCP detailed specification that the Root Port needs to be configured as 4x4 in these three cases, and it cannot be configured through the ID Pin according to the above lines. , so the output CPU_RP_Override_N (connected to PCH) is 0 to tell the BIOS to ignore the ID Pin, and the manual setting under BIOS Setup shall prevail.

In summary, for OCP NIC3.0 network cards that support 1xn (2C+) or both 1xn and 2xm (4C+), when OCP Slimline is connected to CPU0, OCP BIF[2:0]_N＝000, the OCP network card is configured as 1xn, CPU0 Root Port ID Pin is 0010, configured as x16; when OCP Slimline is connected to CPU1, OCP BIF[2:0]_N＝001, OCP network card is configured as 1xn(2C+) or 2xm(4C+), CPU0 Root Port lane0～ 7 is configured as x8, and CPU1 Root Port lane0~7 (or lane8~15) is also configured as x8.

For network cards that require Root Port configuration as 2x8, no matter OCP Slimline is connected to CPU0 or CPU1, OCP BIF[2:0]_N is 001, and the configuration is 2x8 CPU0. Root Port ID is 1010, and the configuration is x8x8; when OCP Slimline is connected to CPU1 When, OCP BIF[2:0]_N＝001, the configuration is 2x8, corresponding to CPU0 Root Port lane0~7 is configured as x8, and CPU1 Root Port lane0~7 (or lane8~15) is also configured as x8 to realize automatic Bandwidth configuration operations.

It can be seen that in this embodiment, by first obtaining the type information of the OCP network card, and then combining the number of CPUs on the basis of the type information, an appropriate working mode is set for the OCP network card, and finally the PCIe bus connector is controlled according to the working mode , to realize the bandwidth allocation to the OCP network card, instead of manually configuring the bandwidth, and improving the configuration efficiency of the OCP network card.

The bandwidth allocation device provided by the embodiment of the present application is introduced below, and the bandwidth allocation device described below and the bandwidth allocation method described above may be referred to in correspondence.

Please refer to FIG. 4 , which is a schematic structural diagram of an OCP network card bandwidth allocation device provided by an embodiment of the present application.

Type obtaining module 100, for obtaining the type information of OCP network card;

The mode setting module 200 is used to set the operating mode of the OCP network card according to the type information and the number of CPUs;

The connector control module 300 is used to control the PCIe bus connector according to the working mode, so as to realize the allocation of the bandwidth of the OCP network card; wherein, the PCIe bus connector is a connector connected with the channel of the OCP network card.

Optionally, the type acquisition module 100 may include:

A signal acquisition unit for obtaining the PRSNTB[3:0]_N signal of the OCP network card;

A type information determining unit, configured to determine the type information according to the PRSNTB[3:0]_N signal.

Optionally, the mode setting module 200 may include:

The stand-alone mode setting unit is used to set the operating mode of the OCP network card to the single-CPU mode of the network card type corresponding to the type information when the number of CPUs is single;

The multi-machine mode setting unit is used for setting the working mode of the OCP network card to the multi-CPU mode of the network card type corresponding to the type information when the number of CPUs is multiple.

Optionally, the mode setting module 200 may include:

2-way configuration unit, used to set the working mode of the OCP network card to 2x8 configuration mode when the PRSNTB[3:0]_N signal is 0b1101 or 0b0110;

4-way configuration unit, used to set the working mode of the OCP network card to 4x4 configuration mode when the PRSNTB[3:0]_N signal is 0b1010 or 0b1001 or 0b0011.

Optionally, the mode setting module 200 may include:

The working mode matching unit is used to match the corresponding working mode to the type information and the number of CPUs according to the OCP specification table;

The mode setting unit is used for setting the working mode of the OCP network card.

Optionally, the mode setting module 200 may include:

CPU quantity determining unit, is used for obtaining CPU_ID Pin signal, and determines CPU quantity according to CPU_ID Pin signal;

The mode setting unit is used to set the working mode of the OCP network card according to the type information and the number of CPUs.

Optionally, the connector control module 300 is specifically used to control the PCH to control the PCIe bus connector according to the working mode, so as to realize the bandwidth allocation of the OCP network card; wherein, the PCIe bus connector is arranged between the OCP network card and the CPU, The PCH is connected to the PCIe bus connector.

The embodiment of the present application also provides a computing device, including:

memory for storing computer programs;

The processor is configured to implement the steps of the bandwidth allocation method as described in the above embodiments when executing the computer program.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the bandwidth allocation method described in the foregoing embodiments are implemented.

Each embodiment in the description is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related part, 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. Those skilled in the art 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 application.

The steps of the methods or algorithms described in conjunction 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.

A bandwidth allocation method for an OCP network card, a bandwidth allocation device, a computing device, and a computer-readable storage medium provided in the present application have been introduced in detail above. In this paper, specific examples are used to illustrate the principles and implementation methods of the present application, and the descriptions of the above embodiments are only used to help understand the methods and core ideas of the present application. It should be pointed out that those skilled in the art can make some improvements and modifications to the application without departing from the principles of the application, and these improvements and modifications also fall within the protection scope of the claims of the application.

Claims (10)

1. A bandwidth allocation method of OCP network card, is characterized in that, comprises:

   Obtain the type information of the OCP network card;

   Set the working mode of the OCP network card according to the type information and the number of CPUs;

   The PCIe bus connector is controlled according to the working mode to realize the bandwidth allocation of the OCP network card; wherein, the PCIe bus connector is a connector connected with a channel of the OCP network card.
2. The bandwidth allocation method according to claim 1, wherein the operating mode of the OCP network card is set according to the type information and the number of CPUs, including:

   matching the type information and the number of CPUs to a corresponding working mode according to the OCP specification table;

   The working mode is set for the OCP network card.
3. The bandwidth allocation method according to claim 1, wherein the operating mode of the OCP network card is set according to the type information and the number of CPUs, including:

   Obtain the CPU_ID Pin signal, and determine the number of CPUs according to the CPU_ID Pin signal;

   Set the working mode of the OCP network card according to the type information and the number of CPUs.
4. The bandwidth allocation method according to claim 1, wherein the operating mode of the OCP network card is set according to the type information and the number of CPUs, including:

   When the number of CPUs is single, the operating mode of the OCP network card is set to the single CPU mode of the network card type corresponding to the type information;

   When the number of CPUs is multiple, the working mode of the OCP network card is set to the multi-CPU mode of the network card type corresponding to the type information.
5. The bandwidth allocation method according to claim 1, wherein obtaining the type information of the OCP network card includes:

   Obtain the PRSNTB[3:0]_N signal of the OCP network card;

   The type information is determined according to the PRSNTB[3:0]_N signal.
6. The bandwidth allocation method according to claim 5, wherein, setting the operating mode of the OCP network card according to the type information and the number of CPUs includes:

   When the PRSNTB[3:0]_N signal is 0b1101 or 0b0110, the operating mode of the OCP network card is set to 2x8 configuration mode;

   When the PRSNTB[3:0]_N signal is 0b1010 or 0b1001 or 0b0011, set the working mode of the OCP network card to 4x4 configuration mode.
7. The bandwidth allocation method according to any one of claims 1 to 6, wherein the PCIe bus connector is controlled according to the operating mode to realize the allocation of the bandwidth of the OCP network card, including:

   Control the PCH to control the PCIe bus connector according to the working mode, so as to realize the allocation of the bandwidth of the OCP network card; wherein, the PCIe bus connector is arranged between the OCP network card and the CPU, and the PCH Connect with the PCIe bus connector.
8. A bandwidth distribution device of an OCP network card, characterized in that, comprising:

   A type acquisition module is used to obtain the type information of the OCP network card;

   A mode setting module, configured to set the operating mode of the OCP network card according to the type information and the number of CPUs;

   A connector control module, configured to control the PCIe bus connector according to the operating mode, so as to allocate the bandwidth of the OCP network card; wherein, the PCIe bus connector is connected to the channel of the OCP network card Connector.
9. A computing device, comprising:

   memory for storing computer programs;

   A processor, configured to implement the steps of the bandwidth allocation method according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the bandwidth allocation method according to any one of claims 1 to 7 is implemented A step of.

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