WO2022267030A1 - Switch chip and power supply method - Google Patents

Abstract

The present application relates to the technical field of communications, and provides a switch chip and a power supply method, used for reducing power consumption of the switch chip. The switch chip comprises: a switch bus and a plurality of switch slices coupled to the switch bus. That is, the switch bus establishes a forwarding path between different switch slices of the plurality of switch slices and/or between different interfaces of the same switch slice. Each of the plurality of switch slices comprises a switch unit and a voltage frequency unit, the switch unit is configured to exchange data by means of the switch bus, and the voltage frequency unit is configured to separately provide an operating voltage and an operating frequency for the switch unit.

Description

A switching chip and power supply method technical field

The present application relates to the technical field of communications, and in particular to a switching chip and a power supply method.

Background technique

With the continuous increase of user data in the communication network, the communication network is becoming more and more complex, and the communication between different network nodes needs to be realized through the switch, and the switching chip is used as the switching hardware in the switch, working in the open system interconnection ( The data link layer and network layer of the open system interconnection (OSI) reference model can be used to realize the encapsulation and forwarding of network packets, traffic or data, so as to provide exclusive forwarding between any two network nodes connected to the switch path.

A switch chip is provided in the prior art, which uses a centralized crossbar or shared memory to exchange data, as shown in (a) in Figure 1, the centralized The cross matrix or shared cache of the chip is set in the middle of the chip, the serial (serdes) interface for receiving and sending data is set on the periphery of the switch chip, and the physical coding sublayer (physical coding sublayer) for encoding, decoding and processing data respectively coding sublayer (PCS) and processing units are placed between the serial interface and the crossbar or shared cache. (b) in Fig. 1 shows the logical diagram of this network switching chip, and this serial interface comprises a plurality of input interfaces (expressed as interface 11 to interface 1n) and a plurality of output interfaces (expressed as interface 21 to interface 2n), The PCS may include multiple receiver (RX) PCSs (represented as RXPCS1 to RXPCSn) and multiple transmit side (transmitter) PCSs (represented as TXPCS1 to TXPCSn), and the processing unit may include multiple input processing (input process) units (indicated as IP1 to IPn) and a plurality of output processing (output process, OP) units (indicated as OP1 to OPn). During data exchange, take the data received by interface 11 as an example to be output by interface 2n, the data stream received by interface 11 is transmitted to the cross matrix or shared buffer after being decoded by RXPCS1 and processed by IP1 in sequence. The cross matrix or the shared buffer performs data exchange on the data stream, and the exchanged data stream is processed by OPn and encoded by TXPCSn in sequence, and then output from the interface 2n.

The above-mentioned switch chips that use a centralized cross-connect matrix or shared cache usually use a single power supply voltage power supply mode. In different business scenarios or different loads, the entire switch chip will be powered by a unified power supply voltage, resulting in the switch. The power consumption of the chip is relatively large.

Contents of the invention

The present application provides a switching chip and a power supply method, which are used to reduce the power consumption of the switching chip under different service scenarios or different loads.

In a first aspect, a switch chip is provided, and the switch chip includes: a switch bus and a plurality of switch slices coupled to the switch bus, that is, the switch bus is between different switch slices in the multiple switch slices , and/or establishing a forwarding path between different interfaces of the same switch slice; wherein, each switch slice in the plurality of switch slices includes a switch unit and a voltage frequency unit; the switch unit is used to pass the switch bus Perform data exchange; the voltage frequency unit is used to provide working voltage and working frequency for the switching unit alone.

In the above technical solution, each of the plurality of switch slices includes a switch unit and a voltage frequency unit, and the switch unit can realize the data exchange function of the switch slice through the switch bus, and the voltage frequency unit can be used When the switching unit is working, the switching unit is provided with operating voltage and operating frequency, that is, each switching slice can be considered as a small switching chip, and the voltage and frequency units in each switching slice can be based on the The working state of the switching unit provides the corresponding working voltage and working frequency, so that when the switching slice works in different business scenarios or under different loads, it can work with different working voltages and working frequencies, so that the switching chip can meet The power consumption of the switch chip can be reduced according to the power supply requirements under different business scenarios and loads.

In a possible implementation manner of the first aspect, the switching unit is further configured to: determine the first voltage frequency indication information according to a preset rate, the preset rate may be configured in advance, for example, the preset rate may be Configure according to the bandwidth of the switching slice; the voltage frequency unit is also used to: set the working voltage and working frequency of the switching unit according to the first voltage frequency indication information. Optionally, the preset rate is configured according to the bandwidth of the exchange segment. In the above possible implementation manner, when the exchange unit starts to work, the exchange unit determines the first voltage frequency indication information according to a preset rate, and the voltage frequency unit sets the operating voltage of the exchange unit according to the first voltage frequency indication information and operating frequency, the accuracy and rationality of setting the operating voltage and operating frequency of the switching unit can be improved, thereby reducing the power consumption of the switching chip.

In a possible implementation manner of the first aspect, the switching unit is further configured to: obtain the switching data volume of the switching slice, and determine the second voltage frequency indication information according to the switching data volume, and the switching data volume may include The sum of the amount of data that needs to be exchanged through the exchange slice may also include the sum of the amount of data to be exchanged accumulated in the exchange slice; the voltage frequency unit is also used to: adjust the exchange according to the second voltage frequency indication information The operating voltage and operating frequency of the unit. In the above possible implementation manner, when the working voltage and frequency of the switching unit are too large or too small to match the working state of the switching unit, the switching unit determines the second voltage corresponding to the current amount of exchanged data frequency indication information, the voltage frequency unit adjusts the operating voltage and operating frequency of the exchange unit according to the second voltage frequency indication information, so that the operating voltage and operating frequency of the exchange unit can adaptively follow the operating state of the exchange unit changes, thereby further reducing the power consumption of the switch chip.

In a possible implementation manner of the first aspect, the switching unit is further configured to: query a preset correspondence according to the amount of exchanged data, so as to obtain the second voltage frequency indication information; wherein, the preset correspondence is used for Indicating the voltage frequency indication information corresponding to each preset data volume range in the plurality of preset data volume ranges, the second voltage frequency indication information is the voltage frequency indication information corresponding to the preset data range where the exchange data volume is located. In the foregoing possible implementation manner, a simple and effective manner for determining the second voltage frequency indication information is provided.

In a possible implementation manner of the first aspect, the switching unit includes a plurality of input interfaces, an input buffer, and a first processing unit; the input buffer is configured to cache the switching fragment received through the plurality of input interfaces received uplink data; the first processing unit is configured to obtain a first data amount accumulated in the input buffer, and when the first data amount is greater than a preset threshold, obtain a third voltage frequency according to the first data amount Indication information; the voltage frequency unit is also used for: adjusting the operating voltage and operating frequency of the first processing unit according to the third voltage frequency indication information. In the above possible implementation manner, when the switching unit is used to receive uplink data, the first processing unit in the switching unit obtains the third voltage frequency indication information according to the first data amount accumulated in the input buffer, the voltage The frequency unit adjusts the operating voltage and operating frequency of the first processing unit according to the third voltage frequency indication information, so that the operating voltage and operating frequency of the first processing unit can adaptively follow the operating state of the receiving side of the switching unit changes, thereby further reducing the power consumption of the switch chip.

In a possible implementation manner of the first aspect, the switching unit further includes a plurality of output interfaces and a second processing unit; the second processing subunit is configured to obtain the to-be-sent second data amount, and obtain fourth voltage frequency indication information according to the second data amount; the voltage frequency unit is also used to adjust the operating voltage and operating frequency of the second processing unit according to the fourth voltage frequency indication information. In the above possible implementation manner, when the switching unit is used to output downlink data, the second processing unit in the switching unit acquires the fourth voltage frequency indication information according to the second data amount to be sent corresponding to the multiple output interfaces , the voltage frequency unit adjusts the operating voltage and operating frequency of the second processing unit according to the fourth voltage frequency indication information, so that the operating voltage and operating frequency of the second processing unit can adaptively follow the transmission side of the switching unit The power consumption of the switch chip is further reduced.

In a possible implementation manner of the first aspect, the voltage frequency unit includes a power supply unit and a clock frequency divider; the power supply unit is configured to separately provide an operating voltage for the switching unit or generate an operating voltage of the switching unit alone; The clock frequency divider is used to separately provide the switching unit with an operating frequency or generate the switching unit's operating frequency. Optionally, when the switching unit is not working, the power supply unit and the clock divider may also not work, that is, the switching unit no longer provides the working voltage and frequency. In the foregoing possible implementation manner, the voltage frequency unit may provide the switching unit with a working voltage and a working frequency separately through a power supply unit and a clock frequency divider, thereby improving design flexibility.

In a possible implementation manner of the first aspect, the power supply unit includes a control unit and a power supply unit; the control unit is configured to control the power supply unit to generate the working voltage of the switching unit. In practical applications, the power supply unit may include multiple power supply units, and the multiple power supply units may supply power to the switch slices where they are located in a partitioned power supply manner, so that the multiple power supply units can be integrated in a flexible number, And the multiple power supply units can be spliced to form a centralized power supply unit structure.

In a possible implementation manner of the first aspect, the power supply unit is an on-chip low-voltage linear regulator OCLDO. When the OCLDO is used to provide the switching unit with an operating voltage, the operating voltage can be quickly adjusted. Usually, the OCLDO can complete the voltage adjustment within 1 microsecond (us), thereby greatly improving the voltage adjustment speed.

In a possible implementation of the first aspect, the power supply unit can be connected to an external power supply, and the power supply unit can convert the output voltage provided by the external power supply into the working voltage of the switching unit, and the switching bus can directly pass through the external power supply Power supply The switching bus is powered by an external power supply. In the above possible implementation, the switch chip only needs to use a unified external power supply, so that the board-level power supply can be designed as the same power supply, that is, the board-level power supply does not perceive the power supply design in the switch chip.

In a possible implementation of the first aspect, the multiple switch slices are arranged in a distributed manner; for example, the multiple switch slices are arranged in a matrix, and the switch bus includes a first switch bus and a second switch bus. A switch bus, any two adjacent rows of switch slices in the multiple switch slices are coupled to the first switch bus, and any adjacent two columns of switch slices in the multiple switch slices are coupled to the second switch bus . In the above possible implementation manners, the plurality of switching slices 2 are set in a distributed manner, which can support flexible quantity expansion, and at the same time support more fine-grained design of voltage regulation and frequency regulation.

In a possible implementation manner of the first aspect, the plurality of switch slices are located in at least one metal layer of the switch chip, and the switch bus is an on-chip switch bus. In the above possible implementation manner, when the multiple switch slices are located on at least two metal layers of the switch chip, the area of the multiple switch slices can be reduced.

In a second aspect, a power supply method for a switch chip is provided. The switch chip includes: a switch bus and a plurality of switch slices coupled to the switch bus, that is, different switch slices of the switch bus in the multiple switch slices A forwarding path is established between slices, and/or between different interfaces of the same switch slice; wherein, each switch slice in the plurality of switch slices includes a switch unit and a voltage frequency unit, and the method includes: the switch unit Data exchange is performed through the exchange bus; the voltage frequency unit provides the operating voltage and operating frequency of the exchange unit.

In a possible implementation manner of the second aspect, before the voltage frequency unit provides the switching unit with the working voltage and the working frequency, the method further includes: the switching unit determines the first voltage frequency indication information according to a preset rate, The preset rate can be configured in advance, for example, the preset rate can be configured according to the bandwidth of the exchange slice; the voltage frequency unit provides the operating voltage and operating frequency of the exchange unit, including: the voltage frequency unit according to The first voltage frequency indication information sets the working voltage and working frequency of the switching unit. Optionally, the preset rate is configured according to the bandwidth of the exchange segment.

In a possible implementation manner of the second aspect, before the voltage frequency unit provides the switching unit with the working voltage and the working frequency, the method further includes: the switching unit obtains the switching data volume of the switching slice, and according to The amount of exchanged data determines the second voltage frequency indication information, the amount of exchanged data may include the sum of the amount of data that needs to be exchanged through the exchange slice, and may also include the sum of the amount of data to be exchanged accumulated in the exchange slice; The voltage frequency unit provides the working voltage and frequency of the switching unit, including: the voltage frequency unit adjusts the working voltage and working frequency of the switching unit according to the second voltage frequency indication information.

In a possible implementation manner of the second aspect, the switching unit determines the second voltage frequency indication information according to the amount of exchanged data, including: querying a preset corresponding relationship according to the amount of exchanged data to obtain the second voltage frequency indication information; wherein, the preset corresponding relationship is used to indicate the voltage frequency indication information corresponding to each preset data volume range in the multiple preset data volume ranges, and the second voltage frequency indication information is the preset Set the voltage and frequency indication information corresponding to the data range.

In a possible implementation manner of the second aspect, the switching unit includes a plurality of input interfaces, an input buffer, and a first processing unit, and the method further includes: the input buffer caches the switching slice through the plurality of input Uplink data received by the interface; the first processing unit acquires a first data amount accumulated in the input buffer, and when the first data amount is greater than a preset threshold value, obtains a third voltage frequency indication according to the first data amount Information; the voltage frequency unit adjusts the operating voltage and operating frequency of the first processing unit according to the third voltage frequency indication information.

In a possible implementation manner of the second aspect, the switching unit further includes a plurality of output interfaces and a second processing unit, and the method further includes: the second processing subunit acquires the to-be-sent data corresponding to the plurality of output interfaces second data amount, and obtain fourth voltage frequency indication information according to the second data amount; the voltage frequency unit adjusts the operating voltage and operating frequency of the second processing unit according to the fourth voltage frequency indication information.

In yet another aspect of the present application, a switching device is provided, where the switching device includes a switching chip, and the switching chip includes the switching chip provided in the foregoing first aspect or any possible implementation manner of the first aspect.

In yet another aspect of the present application, a switching system is provided, the switching system includes a plurality of switching devices, and each switching device in the plurality of switching devices includes the above-mentioned first aspect or any possible implementation of the first aspect way provided by the switch chip.

In yet another aspect of the present application, a computer-readable storage medium is provided. Instructions are stored in the computer-readable storage medium. When the instructions are run on a device, the device executes the above-mentioned second aspect or the second aspect. A power supply method for a switch chip provided in any possible implementation manner.

In yet another aspect of the present application, a computer program product is provided. When the computer program product is run on a device, the device is made to perform the switching provided by the above-mentioned second aspect or any possible implementation manner of the second aspect. Chip power supply method.

It can be understood that any of the power supply methods, switching devices, switching systems, computer-readable storage media, and computer program products provided above can achieve beneficial effects that can be achieved by referring to the beneficial effects of the switching chips provided above. , which will not be repeated here.

Description of drawings

Fig. 1 is a schematic diagram of a switch chip provided by the prior art;

FIG. 2 is a schematic structural diagram of a data communication network provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of an n×n switching system provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a switch chip provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a voltage frequency unit provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of another switch chip provided by the embodiment of the present application;

FIG. 7 is a schematic structural diagram of another switch chip provided in the embodiment of the present application;

Fig. 8 is a schematic diagram of adjusting the operating voltage and operating frequency provided by the embodiment of the present application;

FIG. 9 is a schematic structural diagram of another switch chip provided by the embodiment of the present application;

FIG. 10 is a schematic flowchart of a method for supplying power to a switch chip provided in an embodiment of the present application;

FIG. 11 is a schematic flowchart of another method for supplying power to a switch chip provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In this application, "at least one" means one or more, and "multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (unit) of a, b or c can represent: a, b, c, a and b, a and c, b and c or a, b and c, wherein a, b and c can be It can be single or multiple. In addition, in the embodiments of the present application, words such as "first" and "second" do not limit the quantity and order.

It should be noted that, in this application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design described herein as "exemplary" or "for example" is not to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

With the continuous increase of user data in the communication network, the communication network is becoming more and more complex, and the communication between different network nodes needs to be realized through the switch, and the switching chip is used as the switching hardware in the switch, working in the open system interconnection ( The data link layer and network layer of the open system interconnection (OSI) reference model can be used to realize the encapsulation and forwarding of network packets, traffic or data, so as to provide exclusive forwarding between any two network nodes connected to the switch path.

At present, most switching chips use a centralized crossbar or shared memory to exchange data. As shown in (a) in Fig. 1, the centralized crossbar matrix or shared cache is set in the middle of the switch chip, the serial (serdes) interface for receiving and sending data is set on the periphery of the switch chip, and A physical coding sublayer (physical coding sublayer, PCS) and a processing unit for respectively encoding, decoding and processing data are arranged between the serial interface and the cross matrix or shared buffer. This switch chip using a centralized cross-connect matrix or shared cache usually uses a single power supply voltage power supply mode. In different business scenarios or different loads, the entire switch chip will be powered by a unified power supply voltage, resulting in this The power consumption of the switch chip is large.

Based on this, the present application implements and provides a switching chip, which can be a switching device such as a switch or a router, or a built-in chip of the above-mentioned switching device, and the switching chip includes a plurality of switching slices (tiles), and each switching slice With independent working voltage and working frequency, it can meet the power supply requirements under different business scenarios and different loads, thereby reducing the power consumption of the switching chip.

The switch chip provided by this application can be applied in a data communication network. The architecture of a typical data communication network can be a networking mode including three switching layers (that is, including an access layer, a convergence layer, and a core layer), or it can be It is a networking mode including two switching layers (that is, including the access layer and the core layer). Each switch layer in the data communication network can include multiple nodes, for example, the access layer can include multiple access nodes, the convergence layer can include multiple aggregation nodes, and the core layer can include multiple Core (core) node. Optionally, both the access node and the aggregation node may be electrical switching nodes (also called E nodes), and the core nodes may include both electrical switching nodes and optical switching nodes (also called O nodes).

Among them, when the structure of the data communication network is a networking mode including three switching layers, the downlink interface of the access node is connected to the server that needs to exchange data traffic, and its uplink interface is connected to the downlink interface of the sink node. The uplink interface is connected to the core node. The aggregation layer and the access layer can be divided into multiple groups (Pods), and a Pod can include multiple access nodes and multiple aggregation nodes, and each access node is fully connected to multiple aggregation nodes. In addition, multiple core nodes in the core layer can be divided into multiple core planes, and each core plane is connected to different aggregation nodes in each Pod; or, multiple core nodes in the core layer do not divide core planes, and the core The electrical switching nodes in the layer are connected to all the aggregation nodes, and the optical switching nodes are respectively connected to some or all of the aggregation nodes.

When the structure of the data communication network is a networking mode including two switching layers, the downlink interface of the access node is connected to the server that needs to exchange data traffic, and its uplink interface is directly connected to the core node. The access layer can be divided into multiple groups (Pods), and one Pod can include multiple access nodes. In addition, multiple core nodes in the core layer can be divided into multiple core planes, and each core plane is connected to different access nodes in each Pod; or, multiple core nodes in the core layer do not divide core planes, The electrical switching nodes in the core layer are connected to all the access nodes, and the optical switching nodes are respectively connected to some or all of the access nodes.

In the embodiment of the present application, the structure of the data communication network is a hybrid networking mode including three switching layers, and the core layer is divided into multiple core planes as an example for illustration. FIG. 2 is a schematic diagram of a data communication network architecture. Referring to FIG. 2 , the data communication network includes an access layer, an aggregation layer, and a core layer.

In FIG. 2, the data communication network includes 3 Pods, a Pod includes 3 access nodes and 4 aggregation nodes, and each core plane includes two core nodes as an example for illustration. The access nodes in Figure 2 can be represented as A1~A9, the aggregation nodes can be represented as B1~B12, and the core nodes can be represented as C1~C8 (C1, C3, C5 and C7 are electrical switching nodes, C2, C4, C6 and C8 is an optical switching node), and the three Pods are denoted as P1-P3 respectively.

Among them, when the data traffic is exchanged between servers connected to different access nodes in a Pod, it can be realized through the aggregation node in the same Pod as the access node, for example, the server connected to the access node A1 and the access node A3 If data flow exchange is required, the access node A1 may send the data flow of the server it is connected to to the access node A3 through the convergence node B1. When data traffic is exchanged between servers connected to access nodes in different Pods, it can be realized through the aggregation node in the same Pod as the access node and the core node connected to the aggregation node, for example, access node A1 and The server connected to the access node A5 needs to exchange data traffic, then the access node A1 can send the data flow of the server it connects to the aggregation node B1, and the aggregation node B1 forwards it to the core node C1, and then C1 passes through the aggregation node B5 Send to access node A5.

It should be noted that the structure of the data communication network shown in FIG. 2 is only exemplary, and does not constitute a limitation to its structure. In practical applications, each switching layer of the data communication network may also include more or fewer nodes than shown in the figure, or the data communication network may also be a network including two switching layers, or multiple nodes in the core layer A core node may or may not be divided into multiple core planes, which is not specifically limited in this embodiment of the present application.

For ease of understanding, as shown in FIG. 3, multiple aggregation nodes (for example, n) connected to the same core plane in a data communication network including three switching layers and multiple core nodes in one core plane can be seen here Make an n×n switching system. The n×n switching system includes n source nodes (source, S), n destination nodes (destination, D), and m core nodes (switch element, SE) at the intermediate stage. Among them, Si and Di in Figure 3 are the same sink node (the value of i is from 1 to n in turn), that is, n source nodes and n destination nodes are connected to the same core plane and n sink nodes are respectively used as Nodes divided by function when sending nodes and receiving nodes. Each of the n sink nodes may include multiple interfaces. For S, the multiple interfaces are input interfaces, and for D, the multiple interfaces are output interfaces. A data communication network including three switching layers can be regarded as composed of multiple switching networks, and each switching bus adopts the same control mechanism.

Similarly, a data communication network including two switching layers can also be regarded as composed of multiple switching systems, the difference is that n source nodes and n destination nodes are connected to the same core plane as n access nodes in The nodes that are divided according to functions when they serve as the sending node and the receiving node respectively, will not be described in detail in this embodiment of the present application.

The switching system shown in Figure 3 can complete the operation of switching the data packet (Packet) in the data received from S to D. When the data packet passes through SE, the original variable-length packet (variable-length packet) can be maintained. It can also be cut into cells by S to send, and after D receives all the cells, it can be reassembled into a complete data packet. In such a switching system, S can usually distribute received data to SEs as uniformly as possible. The data packet sent by S usually carries the information of D, and the SE forwards the data packet to the corresponding D according to the carried information.

S receives data from outside the system through the input interface. Usually, S has multiple built-in virtual output queues (virtual output queue, VOQ) for caching data going to different Ds (or for caching data going to different output interfaces of different Ds) ; or multiple VOQs correspond to finer-grained flows, that is, multiple VOQs are used to buffer data packets of flows with different granularities), and VOQs can be used to ensure end-to-end QoS. For an n×n switching bus system, there are generally at least n VOQs corresponding to n Ds in each S. If it is further subdivided according to the output interface of D or requires a higher granularity, more VOQs can also be included. .

Those skilled in the art can understand that the data communication network and the structure of the source node and the destination node described in the embodiment of the application are for more clearly illustrating the technical solution of the embodiment of the application, and do not constitute a provision for the embodiment of the application. The limitation of the technical solution.

FIG. 4 is a schematic structural diagram of a switching chip provided by an embodiment of the present application, the switching chip is a switching device such as a switch or a router, or a built-in chip of the switching device. When the switching chip is applied to a data communication network, the switching chip may be a node in a different layer of the above-mentioned data communication network, or may be a built-in chip of the above-mentioned node.

In the embodiment of the present application, the switch chip includes a switch bus 1 and a plurality of switch slices 2 coupled to the switch bus 1, and each switch slice 2 in the multiple switch slices 2 includes a switch unit 21 and A voltage and frequency unit 22 , the exchange unit 21 is used for data exchange through the exchange bus 1 , and the voltage and frequency unit 22 is used for independently providing the exchange unit 21 with an operating voltage and an operating frequency.

Wherein, the switch bus 1 is coupled with the multiple switch slices 2, so that different switch slices 2 in the multiple switch slices 2 and/or different interfaces of the same switch slice 2 can be established The forwarding path, that is, the switch bus 1 can be used to implement data exchange between different switch slices 2 and/or data exchange between different interfaces of the same switch slice 2 . Optionally, the switching bus 1 may be a bridge.

In addition, the switching unit 21 is used to exchange data through the switching bus 1 may refer to: the switching unit 21 in one switching slice 2 can be used to send the data to be switched to another switching slice 2 through the switching bus 1, And/or, send the data to be exchanged to different interfaces of itself through the exchange bus 1 . Exemplarily, the specific structure of each switching slice 2 in the plurality of switching slices 2 can be shown in (a) in FIG. 1, that is, each switching slice 2 can include a Interfaces, units and buffers for encoding, decoding and processing data respectively.

Furthermore, the voltage and frequency unit 22 is used to provide the operating voltage and operating frequency for the switching unit 21 alone may refer to: the voltage and frequency unit 22 in a switching slice 2 can be used to separately provide the switching unit 21 in the switching slice 2 The working voltage and working frequency are provided, or the voltage frequency unit 22 can be used to independently generate the working voltage and working frequency of the switching unit 21 . When the switching unit 21 is not working, the voltage frequency unit 22 may also not work, that is, the switching unit 21 is no longer provided with working voltage and working frequency.

In the switch chip provided by the embodiment of the present application, each switch slice 2 in the plurality of switch slices 2 includes a switch unit 21 and a voltage frequency unit 22, and the switch unit 21 can realize the switch through the switch bus 1 The data exchange function of the slice 2, the voltage frequency unit 22 can be used to separately provide the working voltage and the working frequency for the switching unit 21 when the switching unit 21 is working, that is, each switching slice 2 can be considered as a small switching chip , the voltage frequency unit 22 in each switch slice 2 can provide corresponding working voltage and working frequency according to the working state of the switch unit 21 in the switch slice 2, so that when the switch slice 2 works in different business scenarios or different When under load, different operating voltages and operating frequencies can be used to work, so that the switching chip can meet the power supply requirements of different business scenarios and different loads, thereby reducing the power consumption of the switching chip.

In a possible embodiment, as shown in FIG. 5 , the voltage frequency unit 22 may include a power supply unit 221 and a clock frequency divider 222 . The power supply unit 221 can be used to provide the working voltage for the switching unit 21 or generate the working voltage of the switching unit 21 when the switching unit 21 is working; The unit 21 provides the operating frequency or generates the operating frequency of the switching unit 21 . When the switching unit 21 is not working, the power supply unit 221 and the clock divider 222 may also not work, that is, no longer provide the switching unit 21 with an operating voltage and operating frequency. In the voltage frequency unit 22 , the switching unit 21 can be provided with the working voltage and the working frequency separately through the power supply unit 221 and the clock frequency divider 222 .

Wherein, the power supply unit 221 can be connected with an external power supply, and the power supply unit 221 can convert the output voltage provided by the external power supply into the working voltage of the switching unit 21, and the switching bus 1 can be directly powered by the external power supply. Optionally, the power supply unit 221 can be an on-chip low dropout regulator (OCLDO), the switching bus 1 can be an on-chip switching bus, and the external power supply can be an off-chip fixed voltage FIX power supply or Adaptive voltage adjustable (adaptive voltage scaling, AVS) power supply. In the switching chip, when the OCLDO is used to provide the switching unit 21 with a working voltage, the fast adjustment of the working voltage can be realized. Usually, the OCLDO can complete the voltage regulation within 1 microsecond (us), thereby greatly improving the voltage Adjust the speed. At the same time, the switch chip only needs to use a unified external power supply, so that it can be designed as the same power supply as the board-level power supply, that is, the board-level power supply does not perceive the power supply design in the switch chip.

Further, the power supply unit 221 may include a control unit and a power supply unit (power cell), and the control unit may be used to control the power supply unit to generate the working voltage of the switching unit 21. In practical applications, the power supply unit 221 may include a plurality of power supply units, and the plurality of power supply units may supply power to the switch slice 2 where it is located in a partitioned power supply manner, so that the plurality of power supply units can realize a flexible number of power supply units. Integrated, and the multiple power supply units can be spliced to form a centralized power supply unit structure.

In a possible embodiment, the plurality of switching slices 2 can be arranged in a distributed manner, so as to support flexible quantity expansion, and at the same time support a finer-grained voltage regulation and frequency regulation design. Exemplarily, as shown in FIG. 6, the plurality of switching slices 2 may be arranged in a matrix, and the switching bus 1 may include a first switching bus 11 and a second switching bus 12 coupled to each other. The multiple switching slices Any two adjacent rows of switch slices 2 in 2 are coupled to the first switch bus 1 , and any two adjacent columns of switch slices 1 among the plurality of switch slices 2 are coupled to the second switch bus 2 .

Wherein, in the switch chip, the plurality of switch slices 2 may be located in at least one metal layer of the switch chip. When the at least one metal layer includes at least two metal layers, the plurality of exchange slices 2 may be distributed among the at least two metal layers, and the exchange slices on each metal layer of the at least two metal layers 2 can be arranged in a matrix.

It should be noted that the structure of the switch bus 1 shown in FIG. 6 above is only exemplary and does not constitute a limitation to the present application. In practical applications, the switch bus 1 only needs to be coupled with the plurality of switch slices 2 It is enough to form a path between any two switch slices 2 in the plurality of switch slices 2, and between different interfaces of the same switch slice 2. For example, the switch bus 1 can also be as shown in FIG. 7 below. Show.

Exemplarily, when the switch chip is a switch chip, the plurality of switch slices 2 are located in a metal layer and arranged in a matrix, and the power supply unit 221 includes a control unit and a plurality of power supply units, the control unit can Located on the side of the switch slice 2 close to the switch bus 1, the plurality of power supply units may be located on opposite sides of the plurality of switch slices 2, and the two sides may be perpendicular to the wiring direction in the metal layer (For example, the wiring direction in FIG. 7 may be a horizontal direction), so that the plurality of power supply units can be assisted in connecting through the wiring in the switch chip.

Further, the process of the voltage frequency unit 22 independently providing the switching unit 21 with the operating voltage and operating frequency may include the following two different situations. The first situation is to set the switching unit 21 when the switching unit 21 starts to work. Working voltage and working frequency, the second case is to adjust the working voltage and working frequency of the switching unit 21 when the working voltage and working frequency of the switching unit 21 are too high or too small. The two cases are described in detail below.

First, for each switching slice 2 in the plurality of switching slices 2, when the switching unit 21 starts working, the switching unit 21 is also used to determine the first voltage frequency indication information according to a preset rate, the The voltage frequency unit 22 is also used to set the working voltage and working frequency of the switching unit 21 according to the first voltage frequency indication information.

Wherein, the preset rate (also referred to as a static rate) can be configured in advance, for example, the preset rate can be configured by those skilled in the art according to the bandwidth of the exchange slice 2, and the specific value of the preset rate can be It is 60%, 70% or 75% of the bandwidth of the switching slice 2, etc., which is not specifically limited in this embodiment of the present application.

In addition, the first voltage and frequency indication information may be used to indicate the voltage and frequency of the switching unit 21, for example, the first voltage and frequency indication information may include first voltage indication information and first frequency indication information, and the first voltage indication information may be used to Indicating the voltage of the switching unit 21 , the first frequency indication information may be used to indicate the frequency of the switching unit 21 .

Specifically, for each switching slice 2, when the switching slice 2 starts to work, the switching unit 21 can query the first preset corresponding relationship according to the preset rate to obtain the first voltage frequency indication information, the first preset Assuming that the corresponding relationship can include voltage and frequency indication information corresponding to each rate range in at least one rate range, the first voltage and frequency indication information is the voltage and frequency indication information corresponding to the rate range where the preset rate is located; the exchange unit 21 can Send the obtained first voltage frequency indication information to the voltage frequency unit 22, so that the voltage frequency unit 22 sets the operating voltage and operating frequency of the exchange unit 21 to the voltage and frequency indicated by the first voltage frequency indication information respectively .

Further, when the switching unit 21 includes two processing units for processing receiving-side data and sending-side data respectively, the preset rate may include a first preset rate and a second preset rate, the first preset rate The setting rate can obtain the voltage frequency indication information corresponding to the processing unit on the receiving side, and the second preset rate can obtain the voltage frequency indication information corresponding to the processing unit on the sending side. The voltage frequency unit 22 can be different according to the corresponding voltage frequency indication information. The processing unit provides corresponding working voltage and working frequency.

It should be noted that the above-mentioned first preset correspondence relationship may be pre-set and configured in the switching unit 21, at least one rate range in the first preset correspondence relationship, and each rate range in the at least one rate range The voltage and frequency indication information corresponding to the range may be determined by those skilled in the art based on experience or experimental measurement, which is not specifically limited in this embodiment of the present application.

Second, for each switching slice 2 in the plurality of switching slices 2, when the operating voltage and operating frequency of the switching unit 21 are too large or too small, the switching unit 21 is also used to obtain the switching slice 21, and determine the second voltage frequency indication information according to the exchange data volume, the voltage frequency unit 22 is also used to adjust the operating voltage and operating frequency of the exchange unit 21 according to the second voltage frequency indication information.

Wherein, the amount of exchanged data may include the sum of the amount of data that needs to be exchanged through the exchange slice 21 , and may also include the sum of the amount of data to be exchanged accumulated in the exchange slice 21 . The amount of exchanged data can be obtained through statistics by the exchange segment 21. For example, the exchange segment 21 can periodically or non-periodically count all the data that needs to be exchanged through the exchange segment 21 to obtain the exchange data amount .

In addition, the second voltage frequency indication information can also be used to indicate the voltage and frequency of the exchange unit 21, for example, the second voltage frequency indication information can include the second voltage indication information and the second frequency indication information, and the second voltage indication information can be In order to indicate the voltage of the switching unit 21 , the second frequency indication information can be used to indicate the frequency of the switching unit 21 .

Specifically, for each switching slice 2, when the amount of switching data transmitted by the switching unit 21 changes or the working state of the switching unit 21 does not match the previously set working voltage or working frequency, the switching unit 21 can Count the amount of exchanged data, and query the second preset corresponding relationship according to the amount of exchanged data to obtain the second voltage frequency indication information. The second preset corresponding relationship may include each preset in a plurality of preset data amount ranges The voltage frequency indication information corresponding to the data volume range, the second voltage frequency indication information is the voltage frequency indication information corresponding to the preset data volume range where the exchange data volume is located; the exchange unit 21 can send the acquired second voltage frequency indication information For the voltage frequency unit 22, when the voltage frequency unit 22 receives the second voltage frequency indication information, the voltage frequency unit 22 can adjust the operating voltage and the operating frequency of the switching unit 21 respectively to the second voltage frequency indication information. Indicated voltage and frequency.

It should be noted that the above-mentioned second preset corresponding relationship may be set in advance and configured in the exchange unit 21, the multiple preset data volume ranges in the second preset corresponding relationship, and the multiple preset data ranges The voltage and frequency indication information corresponding to each preset data volume range in the volume range may be determined by those skilled in the art based on experience or experimental measurement, which is not specifically limited in this embodiment of the present application.

Optionally, the exchange unit 21 can periodically obtain the amount of exchanged data, and compare the amount of exchanged data obtained at different times; if the amount of exchanged data obtained at present is greater than the amount of exchanged data obtained last time, the exchange The unit 21 may send to the voltage frequency unit 22 first instruction information for instructing to increase the voltage frequency; when the voltage frequency unit 22 receives the first instruction information, the voltage frequency unit 22 may increase the exchange unit 21 Working voltage and working frequency; the amount of exchanged data obtained at present is less than the amount of exchanged data obtained last time, the exchange unit 21 can send the second indication information for instructing to reduce the voltage frequency to the voltage frequency unit 22; when the When the voltage frequency unit 22 receives the second indication information, the voltage frequency unit 22 may reduce the working voltage and the working frequency of the switching unit 21 .

Exemplarily, as shown in FIG. 8, taking the processing of the received data by the exchange slice 2 as an example, the exchange unit 21 in the exchange slice 2 can count the amount of data to be exchanged internally accumulated, for example, statistics The amount of data accumulated in the buffer used for caching data; if the amount of data obtained by current statistics is greater than the amount of data obtained by last statistics (that is, the amount of data collected by statistics increases), the exchange unit 21 can send to the voltage frequency unit 22 The first instruction information for instructing to increase the voltage frequency, so that the voltage frequency unit 22 increases the operating voltage and operating frequency of the switching unit 21 (ie step-up, frequency step-up); if the current statistical data volume is less than the above The amount of data obtained by one statistics (that is, the amount of statistical data is reduced), the exchange unit 21 can send to the voltage frequency unit 22 the second indication information for indicating to reduce the voltage frequency, so that the voltage frequency unit 22 can be reduced The working voltage and working frequency of the switching unit 21 (ie step down, down frequency).

Further, as shown in FIG. 9, for each switching slice 2 in the plurality of switching slices 2, the switching unit 21 may include a plurality of input interfaces 211, an input buffer (ingress buffer, IB) 212 and a first A processing unit 213 .

The input buffer 212 is used for buffering uplink data received by the switch slice 2 through the plurality of input interfaces 211 . Wherein, the input buffer 212 may include a plurality of virtual output queues (virtual output queue, VOQ), when the input buffer 212 is used to buffer the uplink data received by the switching slice 2 through the plurality of input interfaces 211 , the multiple VOQs may be used to cache uplink data destined for different switch slices 2 , or for buffering uplink data destined for different interfaces of different switch slices 2 .

The first processing unit 213 is configured to obtain a first data amount accumulated in the input buffer 212, and obtain third voltage frequency indication information according to the first data amount when the first data amount is greater than a preset threshold. Wherein, the uplink data buffered in the input buffer 212 can be scheduled and output according to a certain rate. When the rate of the scheduled output is lower than the receiving rate of the uplink data, the uplink data in the input buffer 212 will be accumulated, so that the The data amount of uplink data accumulated by the input buffer 212 within a period of time may be referred to as the first data amount. Specifically, the first processing unit 213 may acquire the first data amount accumulated in the input buffer 212 periodically or aperiodically, and when the first data amount is greater than a first preset threshold, according to the first data amount Acquire the third voltage frequency indication information; after that, the first processing unit 213 may send the third voltage frequency indication information to the voltage frequency unit 22 .

It should be noted that the first preset threshold can be set in advance, and the first preset value can be related to the capacity of the input buffer, for example, the first preset threshold can be the capacity of the input buffer 60%, 70% or 80%, etc., which are not specifically limited in this embodiment of the present application. In addition, the specific process for the first processing unit 213 to acquire the third voltage and frequency indication information according to the first data amount may be similar to the manner in which the switching unit 2 acquires the second voltage and frequency indication information, and details will not be repeated in this embodiment of the present application.

The voltage frequency unit 22 is further configured to adjust the working voltage and working frequency of the first processing unit 213 according to the third voltage frequency indication information. Wherein, the third voltage frequency indication information can be used to indicate the voltage and frequency of the first processing unit 211, for example, the third voltage frequency indication information can include the third voltage indication information and the third frequency indication information, and the third voltage indication information can be used In order to indicate the voltage of the first processing unit 213 , the third frequency indication information may be used to indicate the frequency of the first processing unit 213 . Specifically, when the voltage frequency unit 22 receives the third voltage frequency indication information, it can adjust the working voltage and frequency of the first processing unit 213 to the voltage and frequency indicated by the third voltage frequency indication information respectively.

Optionally, the switching slice 2 may also include an ingress scheduler (ingress scheduler, ISC) 214, and the ingress scheduler 214 may be used to schedule the uplink data buffered in the input buffer 212, for example, to schedule the uplink data at a certain rate. Uplink data in multiple VOQs in the input buffer 212 are dequeued. The first processing unit 213 can also be used for decoding and slicing the uplink data dequeued from the multiple VOQs of the input buffer 212 , and the processed data can be exchanged through the exchange bus 1 .

In addition, for each VOQ in the plurality of VOQs, the ingress scheduler 214 can also determine the request amount of the VOQ to be dequeued according to the state of the VOQ (that is, the data amount of the data stream where the data cached in the VOQ is located) , and send the requested amount to the sub-shard 2 where the uplink data buffered in the VOQ goes. For example, taking the first switch segment and the second switch segment as an example, if VOQ1 in the input buffer 212 of the first switch segment is used to cache uplink data destined for the second switch segment, then the first switch segment The ingress scheduler 214 of the slice may send the request volume of VOQ1 to be dequeued to the second exchange slice.

Further, as shown in FIG. 9 , for each switching slice 2 in the multiple switching slices 2 , the switching unit 21 may further include multiple output interfaces 215 and a second processing unit 216 .

The multiple output interfaces 215 are used to output downlink data. The downlink data may refer to data sent to a server connected to the switch chip or to other switch chips connected to the switch chip. The downlink data may be data obtained by encoding and recombining data transmitted to the switching segment in the switching network 1 .

The second processing unit 216 is configured to obtain a second data amount to be sent corresponding to the plurality of output interfaces 215, and obtain fourth voltage frequency indication information according to the second data amount. Wherein, the second data amount may refer to the data amount of all downlink data that needs to be sent through the multiple output interfaces 215, and the second processing unit 216 may acquire the second data amount, if the second data amount is greater than the second preset threshold , acquire the fourth voltage frequency indication information according to the second data amount; after that, the second processing unit 216 may send the fourth voltage frequency indication information to the voltage frequency unit 22 .

It should be noted that the second preset threshold may be set in advance, and the second preset threshold may be related to the bandwidth or output rate of the multiple output interfaces 215, and the embodiment of the present application does not make any specific numerical value for the second preset threshold. limit. In addition, the specific process for the second processing unit 215 to acquire the fourth voltage and frequency indication information according to the second data volume may be similar to the manner in which the exchange unit 2 acquires the second voltage and frequency indication information, and will not be repeated in this embodiment of the present application.

The voltage frequency unit 22 is further configured to adjust the working voltage and the working frequency of the second processing unit 216 according to the fourth voltage frequency indication information. Wherein, the fourth voltage and frequency indication information may be used to indicate the voltage and frequency of the second processing unit 216, for example, the fourth voltage and frequency indication information may include fourth voltage indication information and fourth frequency indication information, and the fourth voltage indication information may be In order to indicate the voltage of the second processing unit 216 , the fourth frequency indication information may be used to indicate the frequency of the second processing unit 216 . Specifically, when the voltage frequency unit 22 receives the fourth voltage frequency indication information, it may adjust the working voltage and frequency of the second processing unit 216 to the voltage and frequency indicated by the fourth voltage frequency indication information.

Optionally, the exchange fragment 2 may also include an egress scheduler (egress scheduler, ESC) 217 and an output buffer 218, and the output buffer 218 may include a plurality of output queues (output queue, OQ), and the plurality of OQ It can be used to cache downlink data destined for different output interfaces. The egress scheduler 217 can be used to schedule the downlink data cached in the multiple OQs, for example, to schedule the downlink data in the multiple OQs to be dequeued at a certain rate. The second processing unit 216 can also be configured to perform encoding and other processing on the downlink data dequeued from the multiple OQs, and the processed data can be output through the multiple output interfaces.

In addition, the egress scheduler 217 can also be used to receive the request amount of data going to each output interface 217 in the plurality of output interfaces 215 corresponding to the egress scheduler 217, according to the request amount of the plurality of output interfaces 215 can be The second data amount to be sent corresponding to the multiple output interfaces 215 is determined, and the second data amount is sent to the second processing unit 216, so that the second processing unit 216 can obtain the second data amount.

When each switching slice 2 in the plurality of switching slices 2 includes an ingress scheduler 214 and an egress scheduler 217, in the data exchange process, the ingress scheduler 214 in the source switching slice 2 and the destination switching slice The exchange can be performed between the egress schedulers 217 in 2, and the interaction process can include: the ingress scheduler 214 in the source exchange segment 2 can send the request volume of each VOQ to be dequeued to the corresponding destination exchange segment 2 the egress scheduler 217 in the destination switch slice 2; the egress scheduler 217 in the destination switch slice 2 can perform output scheduling according to a preset rate, and can also send response information ACK to the ingress scheduler 214 in the source switch slice 2; when the When the ingress scheduler 214 in the source switching segment 2 receives the acknowledgment information ACK, the ingress scheduler 214 may also perform dequeue scheduling for multiple VOQs at a preset rate.

In practical applications, comparing the switch chip provided by the embodiment of the present application with a switch chip using a centralized cross-bar matrix or a shared cache, an average power consumption benefit of 10% to 15% can be achieved in a non-maximum bandwidth scenario; at the same time Since the working voltage and working frequency of each switching slice 2 in the plurality of switching slices 2 are set and adjusted independently of each other, the short plank effect of the minimum working voltage can be avoided, and a power consumption gain of about 1% can be realized. In addition, by independently setting or adjusting the operating voltage and operating frequency of each switch slice 2, the ripple of the operating voltage can be effectively improved, the minimum ripple voltage can be reduced, and a power consumption gain of about 1% can be achieved.

In this embodiment of the present application, the voltage frequency unit 22 in each of the multiple switch slices 2 can set or adjust the operating voltage and Working frequency, in order to realize the self-adaptive adjustment of the operating voltage and operating frequency of the switching slice 2, that is, when the switching slice 2 works in different business scenarios or under different loads, the switching slice 2 can be The operating voltage and operating frequency corresponding to the business scenario or load are provided, so that the switching chip can meet the power supply requirements under different business scenarios and different loads, thereby reducing the power consumption of the switching chip.

Figure 10 is a schematic flowchart of a power supply method for a switch chip provided by an embodiment of the present application. The switch chip can be any switch chip provided above, and the switch chip includes a switch bus and a plurality of switches coupled to the switch bus. Switch slices, each of the multiple switch slices includes a switch unit and a voltage frequency unit, and the method includes the following steps.

S301: The switching unit performs data switching through the switching bus.

Wherein, the switch bus is coupled with the multiple switch slices, so that forwarding paths can be established between different switch slices in the multiple switch slices, and/or between different interfaces of the same switch slice, that is, Yes, the switch bus can be used to implement data exchange between different switch slices, and/or data exchange between different interfaces of the same switch slice. Optionally, the switching bus may be a bridge.

In addition, the switch unit is used to perform data exchange through the switch bus may refer to: the switch unit in one switch slice can be used to send the data to be switched to another switch slice through the switch bus, and/or, through the switch The bus sends the data to be exchanged to its various interfaces.

S302: The voltage and frequency unit provides the working voltage and working frequency of the switching unit.

Wherein, the voltage frequency unit in an exchange slice can provide the operating voltage and operating frequency for the exchange units in the exchange slice, and it can also be called that the voltage frequency unit can generate the operating voltage and operating frequency of the exchange unit. When the switching unit is not working, the voltage frequency unit may also not work, that is, the switching unit is no longer provided with working voltage and working frequency.

Further, the process of the voltage frequency unit providing the working voltage and working frequency of the switching unit may include the following two different cases, the first case is setting the working voltage and working frequency of the switching unit when the switching unit starts to work , the second case is to adjust the working voltage and frequency of the switching unit when the working voltage and working frequency of the switching unit are too high or too low. The two cases are described in detail below.

First, for each of the plurality of switch slices, when the switch unit starts to work, the switch unit determines the first voltage frequency indication information according to the preset rate, and the voltage frequency unit determines the first voltage frequency indication information according to the first voltage The frequency indication information sets the working voltage and working frequency of the switching unit.

Specifically, for each switching slice, when the switching slice starts to work, the switching unit can query the first preset corresponding relationship according to the preset rate to obtain the first voltage frequency indication information, the first preset corresponding relationship may include the voltage frequency indication information corresponding to each rate range in at least one rate range, the first voltage frequency indication information is the voltage frequency indication information corresponding to the rate range in which the preset rate is located; the exchange unit may acquire the second A voltage frequency indication information is sent to the voltage frequency unit, so that the voltage frequency unit sets the operating voltage and frequency of the switching unit to the voltage and frequency indicated by the first voltage frequency indication information respectively.

Second, for each of the plurality of switching slices, when the operating voltage and operating frequency of the switching unit are too large or too small, the switching unit is also used to obtain the exchange data volume of the switching slice , and determine the second voltage frequency indication information according to the amount of exchanged data, and the voltage frequency unit is also used to adjust the operating voltage and operating frequency of the exchange unit according to the second voltage frequency indication information.

Wherein, the amount of exchanged data may include the sum of the amount of data that needs to be exchanged through the exchange segment, or the sum of the amount of data to be exchanged accumulated in the exchange segment. The amount of exchanged data can be obtained by statistics of the exchange segment. For example, the exchange segment can periodically or aperiodically count all the amount of data that needs to be exchanged through the exchange segment 21 to obtain the amount of exchanged data.

Optionally, for each exchange fragment, when the amount of exchange data transmitted by the exchange unit changes or the working state of the exchange unit does not match the previously set operating voltage or operating frequency, the exchange unit can count the exchange data volume, and query the second preset corresponding relationship according to the exchanged data volume to obtain the second voltage frequency indication information, the second preset corresponding relationship may include each preset data volume range in a plurality of preset data volume ranges The corresponding voltage frequency indication information, the second voltage frequency indication information is the voltage frequency indication information corresponding to the preset data volume range where the exchange data volume is located; the exchange unit can send the obtained second voltage frequency indication information to the voltage frequency unit, when the voltage frequency unit receives the second voltage frequency indication information, the voltage frequency unit can adjust the working voltage and frequency of the switching unit to the voltage and frequency indicated by the second voltage frequency indication information respectively.

It should be noted that the above-mentioned second preset correspondence relationship may be pre-set and configured in the switching unit, the multiple preset data volume ranges in the second preset correspondence relationship, and the multiple preset data volume ranges The voltage and frequency indication information corresponding to each preset data volume range in the range may be determined by those skilled in the art based on experience or experimental measurement, which is not specifically limited in this embodiment of the present application.

In a possible embodiment, the switching unit includes multiple input interfaces, an input buffer, and a first processing unit. As shown in FIG. 11 , the method includes S311-S313.

S311: The input buffer buffers the uplink data received by the switching slice through the multiple input interfaces.

Wherein, the input buffer may include a plurality of virtual output queues (virtual output queue, VOQ). It can be used to cache uplink data destined for different switch shards, or to cache uplink data destined for different interfaces of different switch shards.

S312: The first processing unit acquires a first data amount accumulated in the input buffer, and when the first data amount is greater than a preset threshold, acquires third voltage frequency indication information according to the first data amount.

The uplink data buffered in the input buffer can be scheduled for output according to a certain rate. When the rate of the scheduled output is less than the receiving rate of the uplink data, the uplink data in the input buffer will be accumulated, so that the input buffer is in The data amount of uplink data accumulated within a period of time may be the first data amount. The first processing unit may obtain the first data amount accumulated in the input buffer, and when the first data amount is greater than the first preset threshold, obtain the third voltage frequency indication information according to the first data amount, and then the third voltage The frequency indication information is sent to the voltage frequency unit.

S313: The voltage frequency unit adjusts the working voltage and the working frequency of the first processing unit according to the third voltage frequency indication information.

Wherein, the third voltage frequency indication information may be used to indicate the voltage and frequency of the first processing unit. When the voltage frequency unit receives the third voltage frequency indication information, it can adjust the working voltage and frequency of the first processing unit to the voltage and frequency indicated by the third voltage frequency indication information respectively.

Optionally, the switching slice may further include an ingress scheduler, which can be used to schedule the uplink data buffered in the input buffer, for example, to schedule the uplink data in the multiple VOQs in the input buffer at a certain rate Uplink data is dequeued. The first processing unit can also be used for decoding and slicing the uplink data dequeued from the multiple VOQs of the input buffer, and the processed data can be exchanged through the exchange bus.

In addition, for each VOQ in the plurality of VOQs, the ingress scheduler can also determine the request volume of the VOQ to be dequeued according to the state of the VOQ (that is, the data volume of the data stream where the data cached in the VOQ is located), And send the request to the sub-shard to which the uplink data buffered in the VOQ goes. For example, taking the first switching fragment and the second switching fragment as an example, if VOQ1 in the input buffer of the first switching fragment is used to buffer uplink data destined for the second switching fragment, then the first switching fragment The ingress scheduler of VOQ1 can send the request quantity to be dequeued to the second exchange segment.

In another possible implementation manner, the switching unit further includes a plurality of output interfaces and a second processing unit. As shown in FIG. 11 , the method may further include S314-S315. Wherein, S314-S315 and S311-S313 may be in no particular order. In FIG. 11 , S314-S315 is located after S311-S313 as an example for illustration.

S314: The second processing subunit acquires a second amount of data to be sent corresponding to the multiple output interfaces, and acquires fourth voltage frequency indication information according to the second amount of data.

Wherein, the multiple output interfaces can be used to output downlink data. The downlink data may refer to data sent to a server connected to the switch chip or to other switch chips connected to the switch chip. The downlink data may be data obtained by encoding and recombining data transmitted to the switching segment in the switching network.

The second data volume may refer to the data volume of all downlink data that needs to be sent through the multiple output interfaces, and the second processing unit may obtain the second data volume, and if the second data volume is greater than the second preset threshold, according to the second The data amount acquires the fourth voltage frequency indication information; after that, the second processing unit may send the fourth voltage frequency indication information to the voltage frequency unit.

S315: The voltage frequency unit adjusts the working voltage and the working frequency of the second processing unit according to the fourth voltage frequency indication information.

Wherein, the fourth voltage frequency indication information can be used to indicate the voltage and frequency of the second processing unit, and when the voltage frequency unit receives the fourth voltage frequency indication information, it can adjust the operating voltage and operating frequency of the second processing unit to the first Four voltages and frequencies indicate the voltage and frequency indicated by the information.

It should be noted that all relevant content in the above device embodiments can be referred to the corresponding steps in the method embodiments, and will not be repeated here.

In the power supply method provided by the embodiment of the present application, each of the plurality of switch slices includes a switch unit and a voltage frequency unit, and the switch unit can realize the data exchange function of the switch slice through the switch bus , the voltage frequency unit can provide a working voltage and a working frequency for the switching unit when the switching unit is working, so that the voltage frequency unit can provide a corresponding working voltage and working frequency according to the working state of the switching unit in the switching slice, so when When the switch slice works in different business scenarios or under different loads, it can work with different operating voltages and operating frequencies, so that the switch chip can meet the power supply requirements of different business scenarios and different loads, thereby reducing the cost of the switch. power consumption of the chip.

In yet another aspect of the present application, a switching device is provided, and the switching device includes a switching chip, and the switching chip includes any switching chip provided in the above device embodiments.

In still another aspect of the present application, a switching system is provided, and the switching system includes a plurality of switching devices, and each switching device in the plurality of switching devices includes any one of the switching chips provided in the above apparatus embodiments.

In yet another aspect of the present application, a computer-readable storage medium is provided. Instructions are stored in the computer-readable storage medium. When the instructions are run on a device, the device is made to perform any one of the methods provided by the above-mentioned method embodiments. The power supply method of the switch chip.

In yet another aspect of the present application, a computer program product is provided. When the computer program product is run on a device, the device is made to execute any one of the methods for supplying power to a switch chip provided in the foregoing method embodiments.

Finally, it should be noted that: the above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto, and any changes or replacements within the technical scope disclosed in the application shall be covered by this application. within the scope of the application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims (20)

A switch chip, characterized in that the switch chip includes: a switch bus, and a plurality of switch slices coupled to the switch bus, and each switch slice in the multiple switch slices includes a switch unit and Voltage frequency unit; The switching unit is configured to perform data switching through the switching bus; The voltage and frequency unit is used to separately provide the switching unit with a working voltage and a working frequency. The chip according to claim 1, characterized in that, The switching unit is further configured to determine the first voltage frequency indication information according to a preset rate; The voltage frequency unit is further configured to set the working voltage and frequency of the switching unit according to the first voltage frequency indication information. The chip according to claim 2, wherein the preset rate is configured according to the bandwidth of the switching slice. The chip according to any one of claims 1-3, characterized in that, The switching unit is further configured to obtain the exchange data volume of the exchange slice, and determine the second voltage frequency indication information according to the exchange data volume; The voltage frequency unit is further configured to adjust the working voltage and frequency of the switching unit according to the second voltage frequency indication information. The chip according to claim 4, wherein the switching unit is also used for: Querying a preset corresponding relationship according to the amount of exchanged data to obtain the second voltage frequency indication information; Wherein, the preset corresponding relationship is used to indicate the voltage frequency indication information corresponding to each preset data volume range in the multiple preset data volume ranges, and the second voltage frequency indication information is where the exchanged data volume is located. The voltage and frequency indication information corresponding to the preset data range. The chip according to claim 4 or 5, wherein the switching unit comprises a plurality of input interfaces, an input buffer and a first processing unit; The input buffer is used to buffer the uplink data received by the switching slice through the multiple input interfaces; The first processing unit is configured to acquire a first amount of data accumulated in the input buffer, and when the first amount of data is greater than a preset threshold, acquire a third voltage frequency indication according to the first amount of data information; The voltage frequency unit is further configured to adjust the working voltage and frequency of the first processing unit according to the third voltage frequency indication information. The chip according to any one of claims 4-6, wherein the switching unit further includes a plurality of output interfaces and a second processing unit; The second processing subunit is configured to acquire a second amount of data to be sent corresponding to the plurality of output interfaces, and acquire fourth voltage frequency indication information according to the second amount of data; The voltage frequency unit is further configured to adjust the working voltage and frequency of the second processing unit according to the fourth voltage frequency indication information. The chip according to any one of claims 1-7, wherein the voltage frequency unit includes a power supply unit and a clock divider; The power supply unit is used to separately provide the working voltage for the switching unit; The clock frequency divider is used to provide the switching unit with the working frequency independently. The chip according to claim 8, wherein the power supply unit includes a control unit and a power supply unit; The control unit is configured to control the power supply unit to generate the working voltage of the switching unit. The chip according to claim 8 or 9, characterized in that the power supply unit is an on-chip low-voltage linear regulator OCLDO. The chip according to any one of claims 1-10, wherein the switching bus is powered by an external power supply. The chip according to any one of claims 1-11, wherein the plurality of switch slices are arranged in a matrix, the switch bus includes a first switch bus and a second switch bus, and the plurality of switch slices Any two adjacent rows of switch slices in the slices are coupled to the first switch bus, and any adjacent two columns of switch slices in the plurality of switch slices are coupled to the second switch bus. The chip according to any one of claims 1-12, wherein the plurality of switch slices are located in at least one metal layer of the switch chip, and the switch bus is an on-chip switch bus. A power supply method for a switch chip, characterized in that the switch chip includes: a switch bus and a plurality of switch slices coupled to the switch bus, and each switch slice in the multiple switch slices includes A switching unit and a voltage frequency unit, the method comprising: The exchange unit performs data exchange through the exchange bus; The voltage frequency unit alone provides the switching unit with working voltage and working frequency. The method according to claim 14, wherein before the voltage frequency unit provides the switching unit with the operating voltage and operating frequency, the method further comprises: The switching unit determines the first voltage frequency indication information according to a preset rate; The voltage and frequency unit independently provides the working voltage and the working frequency for the switching unit, comprising: the voltage and frequency unit setting the working voltage and working frequency of the switching unit according to the first voltage and frequency indication information. The method according to claim 15, wherein the preset rate is configured according to the bandwidth of the switching slice. The method according to any one of claims 14-16, wherein before the voltage frequency unit provides the switching unit with the working voltage and working frequency, the method further includes: The exchange unit obtains the exchange data volume of the exchange slice, and determines the second voltage frequency indication information according to the exchange data volume; The voltage frequency unit independently provides the operating voltage and operating frequency for the exchange unit, including: the voltage frequency unit adjusts the operating voltage and operating frequency of the exchange unit according to the second voltage frequency indication information. The method according to claim 17, wherein the switching unit determines the second voltage frequency indication information according to the amount of exchanged data, comprising: Querying a preset corresponding relationship according to the amount of exchanged data to obtain the second voltage frequency indication information; Wherein, the preset corresponding relationship is used to indicate the voltage frequency indication information corresponding to each preset data volume range in the multiple preset data volume ranges, and the second voltage frequency indication information is where the exchanged data volume is located. The voltage and frequency indication information corresponding to the preset data range. The method according to claim 17 or 18, wherein the switching unit comprises a plurality of input interfaces, an input buffer and a first processing unit, and the method further comprises: The input buffer buffers the uplink data received by the switch slice through the multiple input interfaces; The first processing unit acquires a first amount of data accumulated in the input buffer, and when the first amount of data is greater than a preset threshold, acquires third voltage frequency indication information according to the first amount of data; The voltage frequency unit adjusts the operating voltage and operating frequency of the first processing unit according to the third voltage frequency indication information. The method according to any one of claims 17-19, wherein the switching unit further includes a plurality of output interfaces and a second processing unit, and the method further includes: The second processing subunit acquires a second amount of data to be sent corresponding to the plurality of output interfaces, and acquires fourth voltage frequency indication information according to the second amount of data; The voltage frequency unit adjusts the operating voltage and operating frequency of the second processing unit according to the fourth voltage frequency indication information.

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