WO2020103736A1 - Data transmission device, processing system, and message distribution method and apparatus - Google Patents

Abstract

Embodiments of the present invention provide a data transmission device, a processing system, and a message distribution method and apparatus. The data transmission device comprises a message distributor, and a first interface, a second interface, a first storage medium, and a second storage medium which are separately connected to the message distributor. The first storage medium stores configuration information of all data transmission devices on one cascade link. When message transmission occurs between data transmission devices on the cascade link, the message distributor of the data transmission device itself can determine a message receiver according to inherent configuration information stored in the first storage medium and attribute information in a message to be distributed, and forwards, by means of different interfaces, the message to be distributed. In this way, communications between devices can be implemented without using other devices, thereby improving the communication efficiency between the devices. Moreover, the provision of the second storage medium can ensure that there is a space for storing various data obtained after the device processes a message, thereby ensuring normal operation of the device.

Description

Data transmission equipment and processing system, message distribution method and device

This application requires the priority of the Chinese patent application submitted on November 23, 2018 with the application number 201811422422.2 and the invention titled "Data Transmission Equipment and Processing System, Message Distribution Method and Device", the entire contents of which are incorporated by reference in this application in.

Technical field

The present invention relates to the field of data transmission technology, and in particular, to a data transmission device and processing system, and a message distribution method and device.

Background technique

In a system that can provide multiple functions, the normal realization of multiple functions usually depends on the normal communication between different data transmission devices. For example, the normal communication between the central processor in the computer system and the network card and the graphics card can ensure that the computer system has network and display functions.

In the prior art, for two data transmission devices that need to communicate, a data switch will be connected between the two, and the data generated between the data transmission devices will be transmitted through this data interchanger, thereby realizing the data transmission device Normal communication between. However, the use of a data switch will reduce the communication efficiency between data transmission devices.

Summary of the invention

In view of this, the embodiments of the present invention provide a data transmission device and a processing system, a message distribution method and an apparatus, to improve the communication efficiency between devices.

In a first aspect, an embodiment of the present invention provides a data transmission device, including: a message distributor, a first interface, a second interface, a first storage medium, and a second storage medium respectively connected to the message distributor;

The first storage medium stores inherent configuration information of each data transmission device on the same cascade link as the data transmission device;

The second storage medium stores service data characteristic information of the data transmission device;

The message distributor is used to receive the message to be distributed; according to the correspondence between the attribute information of the message to be distributed and the inherent configuration information and the service data feature information, the message to be distributed through the The first interface or the second interface is sent to the corresponding data transmission device in the cascade link.

In a second aspect, an embodiment of the present invention provides a processing system, including: a controller, a first data transmission device, and a second data transmission device connected in sequence;

The controller is configured to generate a message to be distributed and send the message to be distributed to the first data transmission device;

The first data transmission device is configured to respectively according to the attribute information of the message to be distributed and the inherent configuration information of each data transmission device stored in the first data transmission device and the service data of the first data transmission device The correspondence between the characteristic information is that the message to be distributed is sent to the second data transmission device through the first interface of the first data transmission device.

In a third aspect, an embodiment of the present invention provides a message distribution method, including:

Receive messages to be distributed;

Send the message to be distributed to the device cascade chain according to the correspondence between the attribute information of the message to be distributed and the inherent configuration information of each data transmission device and service data feature information in the device cascade link The corresponding data transmission equipment in the road.

According to a fourth aspect, an embodiment of the present invention provides a message distribution apparatus, including:

The receiving module is used to receive the message to be distributed;

The distribution module is configured to send the message to be distributed to all the devices according to the correspondence between the attribute information of the message to be distributed and the inherent configuration information of each data transmission device in the device cascade link and the service data feature information The corresponding data transmission device in the device cascade link.

The data transmission device provided by the embodiment of the present invention includes: a message distributor, a first interface, a second interface, a first storage medium, and a second storage medium respectively connected to the message distributor. The first storage medium stores configuration information of all data transmission devices on the same cascade link as the data transmission device. Therefore, when message transmission occurs between multiple data transmission devices on this cascade link, The message distributor of the data transmission device may determine the recipient of the message to be distributed according to the inherent configuration information stored in the first storage medium and the attribute information in the message to be distributed, and send the message to be distributed through the first interface or the second interface The message is sent to the corresponding data transmission device, that is, communication between different data transmission devices is realized without using other devices, and the communication efficiency is improved. At the same time, setting the second storage medium can ensure that the service data and the service data feature information generated after the data transmission device processes the message have space to store, so as to ensure the normal operation of the data transmission device.

BRIEF DESCRIPTION

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, without paying any creative work, other drawings can be obtained based on these drawings.

1 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention;

2 is a schematic structural diagram of another data transmission device according to an embodiment of the present invention;

3 is a schematic structural diagram of a processing system provided by an embodiment of the present invention;

4 is a flowchart of a message distribution method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a message distribution apparatus according to an embodiment of the present invention.

detailed description

To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

The terminology used in the embodiments of the present invention is for the purpose of describing specific embodiments only, and is not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include the majority forms unless the context clearly indicates other meanings, "a variety" Generally, at least two kinds are included, but the case where at least one kind is included is not excluded.

It should be understood that the term “and / or” used herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate: A exists alone, and A and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the related objects before and after are in an "or" relationship.

Depending on the context, the words "if" and "if" as used herein may be interpreted as "at ..." or "when ..." or "in response to determination" or "in response to recognition". Similarly, depending on the context, the phrases "if determined" or "if identified (statement or event stated)" can be interpreted as "when determined" or "in response to determination" or "when identified (statement or event stated) ) "Or" in response to identification (statement or event stated) ".

It should also be noted that the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a commodity or system that includes a series of elements includes not only those elements, but also those that are not explicitly listed Or other elements that are inherent to this commodity or system. Without more restrictions, the element defined by the sentence "include one ..." does not exclude that there are other identical elements in the commodity or system that includes the element.

Before describing the solution in detail, it should be noted that the data transmission devices in the following embodiments of the present invention are all devices suitable for the high-speed serial computer expansion bus standard (Peripheral Component Interconnect Express, referred to as PICE), that is, PICE device.

In addition, in order to ensure conciseness of the description of the solution and easy understanding, the data transmission device provided in each embodiment of the present invention may be referred to as a data transmission device 1.

Based on this, FIG. 1 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention. As shown in FIG. 1, the data transmission device 1 includes a message distributor 11 and first interfaces respectively connected to the message distributor 11 12. The second interface 13, the first storage medium 14, and the second storage medium 15.

In practical applications, multiple data transmission devices having the same internal structure as the data transmission device 1 can be cascaded to one link. For example, a cascade link can be expressed as: Device A-Device B-Device C-Device D. At this time, taking device B as an example, device A may be understood as its superior data transmission device, and device C may be understood as its subordinate data transmission device.

For all data transmission devices on the same cascade link as the data transmission device 1, their inherent configuration information can be stored in the first storage medium 14 of the data transmission device 1. Based on the PICE bus standard, the first storage medium 14 may be a Peer-to-Peer (P2P) configuration space functionally. In practical applications, optionally, the P2P configuration space may specifically be a PICE bridge (PICe Bridge) type configuration space. The P2P configuration space may be configured with inherent configuration information of each data transmission device in the cascade link. For the inherent configuration information of the device, it can be the characteristics of the device itself, such as the device identification, it can be the location information of the device on the cascade link, it can be the function identification of the first storage medium and the second storage medium of the device, It can also be information about the memory space occupied by the operating system configured by the operating system for the device, and so on.

Since multiple data transmission devices on the same cascade link may have the same internal structure as the data transmission device 1. Therefore, the first storage medium of other data transmission devices in the cascade link may also store inherent configuration information of all devices in the cascade link. And, each data transmission device may have different functions. Taking a computer system as an example, the data transmission device 1 and other data transmission devices in the cascade link may be a network card, a graphics card, a sound card, a built-in modem, a USB card, and so on.

In addition, the data transmission devices on the same cascade link can also communicate by sending and receiving messages. For the data transmission device 1, it can receive messages sent by other data transmission devices in the cascade link. Optionally, the data transmission device 1 may receive various types of messages such as configuration read-write messages or function execution messages. The read-write configuration message may be a message sent by the superior data transmission device of the data transmission device 1 to modify or read the non-intrinsic configuration of the data transmission device 1, or may be sent by the superior data transmission device of the data transmission device 1 A message to read the inherent configuration of the data transmission device 1. The function execution message may be a message sent by a superior data transmission device of the data transmission device 1 to control the data transmission device 1 to perform a specific function. Under the PCIe bus standard, specifically, the message received by the data transmission device may be a Type 0 type PCIe configuration request message, a Type 1 type PCIe configuration request message, an I / O read / write request message, or a PCIe P2P Transfer request messages, etc.

After processing the received message, the data transmission device 1 will further obtain service data and service data feature information. Optionally, the service data feature information may be represented as a storage location of the service data in the second storage medium 15, that is, a physical address. And the service data characteristic information obtained by the data transmission device 1 may be stored in the second storage medium 15. Also under the PCIe bus standard, the second storage medium may be an endpoint configuration space functionally. In practical applications, optionally, the endpoint configuration space may specifically be a PICE endpoint configuration space.

In practical applications, it is easy to think that not all recipients of the message in the message received by the data transmission device 1 are the data transmission device 1. Therefore, the data transmission device 1 can also use its own message distributor 11 to distribute the received message, where the message distributed by the message distributor 11 can be called a message to be distributed. Optionally, the message to be distributed may specifically include attribute information and a message body.

For the attribute information of the message to be distributed, optionally, it may specifically include the message type and the function identifier of the message receiver. The message including the message type in this attribute information is usually the configuration read-write message mentioned above, such as a PCIe configuration request message. And the configuration read-write message can usually be sent by the superior data transmission device. After receiving the message to be distributed, the message distributor 11 obtains the message type included in the attribute information. In one case, if the message type is a preset type, indicating that the receiver of the message to be distributed is the data transmission device 1, the message distributor 11 then sends the message to be distributed according to the function identifier of the message receiver included in the attribute information To the storage medium with the same function identifier in the data transmission device 1. And under the PCIe bus standard, the function identifier can be expressed as function ID in the attribute information of the message to be distributed.

For example, assume that the function identifiers of the first storage medium 14 and the second storage medium 15 of the data transmission device 1 are A and B, respectively, that is, the function IDs of the two storage media are A and B, respectively. Based on this, if the function identifier of the message receiver included in the attribute information is A, the message to be distributed is sent to the first storage medium 14 of the data transmission device 1. If the function identifier of the message receiver included in the attribute information is B, the message to be distributed is sent to the second storage medium 15 of the data transmission device 1. Optionally, for the PCIe configuration request message, the message type included in the attribute information may be expressed as Type0 or Type1, and in actual applications, the preset message type is usually Type0.

After obtaining the message type included in the attribute information, in another case, if the message type included in the attribute information is a non-preset type, the above example is Type1, which indicates that the recipient of the message to be distributed is not this data Transmission device 1, at this time, the message distributor 11 needs to further determine the recipient of the message to be distributed, that is, to determine whether the recipient of the message to be distributed is on the same cascade link as the data transmission device 1 and Adjacent subordinate data transmission equipment.

Specifically, in addition to the message type and the function identifier of the message receiver, the attribute information of the message to be distributed may also include location information, which may be used to indicate that the message receiver is in the cascade link where it is located. position. Optionally, under the PCIe bus standard, the location information may be specifically represented as a bus number (BusNumber) of the data transmission device in the attribute information of the message to be distributed. Generally speaking, the smaller the number of the bus number, the higher the data transmission device is in the cascade link. For example, to undertake the cascade link mentioned above: Device A-Device B-Device C-Device D, the bus numbers can be a, b, c, d, respectively, where a, b, c, and d are all integers, and a <b <c <d.

After obtaining the location information, the message distributor 11 may obtain the inherent configuration information of each data transmission device on the cascade link stored in the first storage medium 14 by querying. Based on the query, the inherent configuration information is compared with the position information in the attribute information, and the message to be distributed is forwarded according to the comparison result.

After the comparison, if the location information included in the attribute information of the message to be distributed is the same as the location information of the subordinate data transmission device adjacent to the data transmission device 1, that is, the bus number included in the attribute information of the message to be distributed is If the bus number of the first-level data transmission device is the same as the next-level bus number (Secondary Bus Number), it is determined that the recipient of the message to be distributed is this lower-level data transmission device. Further, the message type of the message to be distributed is modified to a preset type, following the above example, that is, the message type is modified to Type 0, and then, the modified message to be distributed is sent to the subordinate data transmission device.

If the location information included in the attribute information of the message to be distributed is different from the location information of the lower-level data transmission device adjacent to the data transmission device 1, that is, the bus number included in the attribute information is not the same as the next-level bus number, then determine The recipient of the message to be distributed is not this subordinate data transmission device. At this time, the message distributor 11 may further determine whether the recipient of the message to be distributed is in the cascade link where the data transmission device 1 is located according to the location information included in the attribute information.

If the receiver is in the cascade link where the data transmission device 1 is located, that is, the bus number included in the attribute information is located in the next-level bus number (Secondary Bus Number) and the bus number of the last-level data transmission device is Between the last bus number (Subordinate Bus Number), the message distributor 11 does not perform any processing on the message to be distributed, and directly sends it to the subordinate data transmission device adjacent to the data transmission device 1 through the first interface 12 Yes, the subordinate data transmission device can further forward the message to be distributed. If the recipient of the message to be distributed is not in the cascade link where the data transmission device 1 is located, the message distributor 11 ignores the message to be distributed without performing any processing on the message to be distributed.

The above process actually judges whether the receiver of the message to be distributed is a lower-level data transmission device, and then judges whether the receiver is in the cascade link where the data transmission device 1 is located. However, the present invention does not limit the sequence of the two judgment processes.

In addition, in practical applications, the message distributor 11 may also receive a message sent by the data transmission device 1 itself to read the configuration information of the superior data transmission device of the data transmission device 1. At this time, the message distributor 11 can also send the message to be distributed to the superior data transmission device of the data transmission device 1 through the second interface 13 in the above manner.

In the embodiment of the present invention, the first storage medium 14 of the data transmission device 1 stores configuration information of all data transmission devices on the same cascade link as the data transmission device 1. Therefore, when message transmission occurs between multiple data transmission devices on this cascade link, the message distributor 11 of the data transmission device 1 itself may be based on the inherent configuration information stored in the first storage medium 14 and the message to be distributed The attribute information of determines the recipient of the message to be distributed, and sends the message to be distributed to the corresponding data transmission device through the first interface 12 or the second interface 13. Under the PCIe bus standard, that is, data transmission devices do not need to be connected with PCIe switches (PCIe switch) and other devices to achieve interconnected communication between different data transmission devices, improving communication efficiency. At the same time, the provision of the second storage medium 15 can ensure that the service data and service data feature information generated after the data transmission device 1 processes the message has room to store, so as to ensure the normal operation of the data transmission device 1.

FIG. 2 is a schematic structural diagram of another data transmission device according to an embodiment of the present invention. As shown in FIG. 2, on the basis of FIG. 1, the data transmission device further includes: a processor 21.

The attribute information of the message to be distributed may also include the receiving address and the information of the sender of the message. And the message to be distributed including the receiving address in such attribute information may be a function execution message sent by a superior data transmission device of the data transmission device 1. Under the PCIe bus standard, this message may be a PCIe P2P transmission request message or I / O Read the request message. Optionally, the receiving address may be specifically represented as a physical address, and the information of the message sender may be device identification, location information, etc., where, under the PCIe bus standard, the device identification may be expressed as Device ID in the message to be distributed. At this time, the message distributor 11 may determine whether the reception address included in the attribute information is located in the storage space corresponding to the second storage medium 15 of the data transmission device 1.

In one case, if the receiving address included in the attribute information is located in the storage space corresponding to the second storage medium 15, the message distributor 11 forwards the message to be distributed to the processor 21 of the data transmission device 1 itself. The processor 21 executes the message to be distributed by calling a corresponding function module (not shown in FIG. 2), so that the data transmission device 1 realizes functions corresponding to the message to be distributed, such as a network connection function, an image display function, etc. . After the processor 21 executes this message, the generated service data can be stored in the second storage medium 15.

In another case, if the receiving address included in the attribute information is not located in the storage space corresponding to the second storage medium 15, at this time, the message distributor 11 then relies on all data in the cascade link stored in the first storage 14 The inherent configuration information of the transmission device 1 determines the inherent configuration information of the upper-level data transmission device and the lower-level data transmission device adjacent to the data transmission device 1. Finally, the inherent configuration information of the upper-level data transmission device and the lower-level data transmission device and the information of the message sender included in the attribute information are used to forward the message to be distributed to the non-message sender, the upper-level data transmission device or the lower-level data transmission device , So that the upper-level data transmission device or the lower-level data transmission device that receives the message to be distributed can distribute it again.

For example, the data transmission device 1 is in the cascade link of device I—device II—device III, and the data transmission device 1 is device II in the link. At this time, after the device II receives the message to be distributed, if the sender of the message is the device I and the receiving address included in the message to be distributed is not located in the storage space corresponding to the second storage medium of the device II, the message distributor of the device II The message to be distributed will be sent to device III. That is, the message to be distributed is sent to the subordinate device of the device II.

Similarly, if the message sender is device III, and the receiving address included in the message to be distributed is not located in the storage space corresponding to the second storage medium of device II, the message distributor of device II sends the message to be distributed to device I . That is, the message to be distributed is sent to the superior device of the device II.

In addition, in practical applications, the upper or lower data transmission device of the data transmission device 1 in the cascade link can also generate a read message, and the read message is also sent to the data transmission device 1. At this time, the data transmission device 1 will generate a corresponding read response message in response to the read message, and use the read response message to include the information to be read in the message body and feed it back to the data transmission that generated the read message. device.

In this case, after receiving the read message sent by other devices in the cascade link, such as an I / O read request message, the data transmission device 1 records the information of the data transmission device that generated the read message, that is, the read The sender information of the message. After the message distributor 11 receives the read response message generated by the data transmission device 1 itself, that is, the message to be distributed, the message distributor 11 may determine the data transmission device that generates the read message according to the previously recorded message sender information. At this time, the message distributor 11 may directly send the read response message generated by the data transmission device 1 itself to the sender of the read message.

In the embodiment of the present invention, based on the embodiment shown in FIG. 1, the data transmission device 1 further includes a processor 21. When the message distributor 11 of the data transmission device 1 receives the message to be distributed whose attribute information includes the receiving address, it can distribute the message to be distributed according to the receiving address. If the receiving address is located in the storage space corresponding to the second storage medium 15, the message to be distributed is sent to the processor 21 of the data transmission device 1. The processor 21 can process this message by calling a corresponding function module, so that the data transmission device 1 can realize a specific function. Meanwhile, when the message to be distributed is a read response message, the message distributor 11 can directly send the read response message to the data transmission device that generates the read message corresponding to the read response message, under the PCIe bus standard, That is to say, it is possible to realize interconnected communication between different data transmission devices without connecting devices such as PCIe switches between data transmission devices, and there is no need to execute complex distribution algorithms in the communication process, which further improves the communication efficiency between data transmission devices.

In summary, the information included in the attribute information of the configuration read-write message and the function execution message is different. The above embodiments can actually be understood as a process in which the data transmission device 1 distributes the configuration read-write message or the function execution message. For specific content, please refer to the relevant description in the above embodiments.

FIG. 3 is a schematic structural diagram of a processing system provided by an embodiment of the present invention. As shown in FIG. 3, the processing system includes: a controller 31, a first data transmission device 32, and a second data transmission device 33 that are sequentially connected.

The controller 31 is configured to generate a message to be distributed, and send the message to be distributed to the first data transmission device 32.

The controller 31 can be understood as a message source that can generate a large number of messages to be distributed. Taking a computer system as an example, this controller can be regarded as a central processor that controls the coordinated work of various parts of the computer.

The first data transmission device 32 is configured to respectively correspond to the inherent configuration information of each data transmission device stored in the first data transmission device 32 and the service data feature information of the first data transmission device 32 according to the attribute information of the message to be distributed , Send the message to be distributed to the second data transmission device 33 through the first interface of the first data transmission device. The first data transmission device 32 and the second data transmission device 33 are in a cascade link, and the first storage medium of the first data transmission device 32 may store the inherent configuration information of each of the two data transmission devices. The first storage medium of the first data transmission device 32 may store the service data characteristic information of the first data transmission device 32 itself.

Optionally, the processing system further includes: a third data transmission device 34 connected to the second data transmission device 33.

The first data transmission device 32 and the third data transmission device 34 are used to generate a message to be distributed and send the message to be distributed to the second data transmission device 33.

The second data transmission device 33 is configured to receive messages to be distributed sent by the first data transmission device 32 and the third data transmission device 34; according to the attribute information of the message to be distributed and the inherent configuration information stored in the second data transmission device 33, respectively And the correspondence between the service data characteristic information of the second data transmission device 33, the message to be distributed is sent to the third data transmission device 34 through the first interface of the second data transmission device 33 or through the second data transmission device 33 The second interface is sent to the first data transmission device 32.

The first data transmission device 32, the second data transmission device 33, and the third data transmission device 34 all have the same internal structure, which can be understood as the input device device 1 in each of the above embodiments. Similar to the foregoing embodiments, the first data transmission device 32 and the third data transmission device 34 can be understood as an upper-level data transmission device and a lower-level data transmission device of the second data transmission device 33, respectively. In addition, the message distributor included in each data transmission device can receive the messages to be distributed generated by itself or the messages to be distributed sent by other devices. The message distributor can distribute the received messages to be distributed. The data transmission devices in this system are still PCIe devices suitable for the PCIe bus standard. For the specific distribution process and technical effects of the PCIe device to distribute the message, refer to the relevant description in the embodiments shown in FIG. 1 to FIG. 2, and details are not described herein again.

Based on the structure and working process of the data transmission device provided in the embodiments shown in FIG. 1 to FIG. 2, FIG. 4 is a flowchart of a message distribution method provided by an embodiment of the present invention, and the message provided by the embodiment of the present invention. The distribution method may be performed by the data transmission device shown in FIGS. 1 to 2, and as shown in FIG. 4, the method includes the following steps:

S101. Receive a message to be distributed.

S102, according to the correspondence between the attribute information of the message to be distributed and the inherent configuration information of each data transmission device in the device cascade link, and the service data feature information, send the message to be distributed to the corresponding device cascade link Data transmission equipment.

The data transmission device may receive a message to be distributed sent by a data transmission device in the device cascade link. The device cascade link mentioned here is also the cascade link mentioned in the foregoing embodiments. For simplicity and clarity of description, in the following description, the device cascade link is simply referred to as a cascade link, and at the same time, the data transmission device that receives the message to be distributed is referred to as the target data transmission device. The message distribution method provided by this embodiment is also executed by this target data transmission device.

Based on this, since the target data transmission device receiving the message to be distributed already stores the inherent configuration information of each data transmission device in the cascade link, at the same time, the target data transmission device can also obtain each data transmission device in the cascade link Corresponding business data feature information. Therefore, the target data transmission device can match the attribute information in the message to be distributed with the inherent configuration information and service data characteristic information of each data transmission device in the cascade link, and finally send the message to be distributed to the level according to the matching result The corresponding data transmission equipment in the link. Similar to the above embodiment, for the inherent configuration information stored in the target data transmission device, it may be the device identification of each data transmission device in the cascade link, it may be the location information of the device on the cascade link, it may be The function identifiers of the first storage medium and the second storage medium of the device may also be memory space information occupied by the operating system configured by the operating system for the device, and so on. For the content specifically included in the service data feature information, refer to the related description in the embodiments shown in FIG. 1 to FIG. 2 above, and details are not described herein again.

For the distribution process of the message to be distributed, specifically, optionally, the attribute information of the message to be distributed may include the message type and the function identifier of the message receiver. The message types may be generally two types, that is, a preset type or a non-preset type. Following the description in the foregoing embodiment, the preset type is usually Type0, and the non-preset type is usually Type1. The message including the message type in the attribute information is usually a read-write configuration message, such as a PCIe configuration request message. And according to the above embodiment, it can also be known that the data transmission device may be configured with two storage media, that is, the first storage medium and the second storage medium in the above embodiment, then the inherent configuration information of the data transmission device may include different storage media The respective function identifiers are the respective function identifiers of the first storage medium and the second storage medium.

If the message type included in the attribute information of the message to be distributed is a preset type, it indicates that the message is sent to the target data transmission device. Further, the target data transmission device may determine the receiver of the message according to the locally stored inherent configuration information and the function identifier of the receiver of the message included in the attribute information. If the function identifier included in the message attribute is the same as the function identifier of the first storage medium in the target data transmission device, the target data transmission device sends the message to be distributed to this first storage medium. If the function identifier included in the message attribute is the same as the function identifier of the second storage medium, the message to be distributed is sent to the second storage medium of the target data transmission device.

Optionally, in addition to the message type and the function identifier of the message receiver, the attribute information of the message to be distributed may also include the location information of the message receiver in the cascade link. If the attribute information of the message to be distributed includes a message type that is not a preset type, that is, Type 1, it indicates that the message to be distributed is not sent to the target data transmission device, and the target data transmission device according to the inherent configuration information stored locally, It may be further determined whether the message receiver is a subordinate data transmission device of the target data transmission device according to the location information included in the information attribute information. Wherein, the position information in the attribute information may specifically be expressed as the bus number of the data transmission device. Generally speaking, the smaller the number of the bus number, the higher the data transmission device is in the cascade link.

If the message receiver is a subordinate data transmission device of the target data transmission device, the target data transmission device will modify the message type of the message to be distributed to a preset type, that is, change the message type from Type1 to Type0, and modify the type The subsequent message is sent directly to the subordinate data transmission device of the target data transmission device.

If the message receiver is not a subordinate data transmission device of the target data transmission device, the target data transmission device can further determine whether the message receiver of the message to be distributed is located in the target data transmission according to the locally stored inherent configuration information and the location information in the attribute information The device is in the cascade link. If the message receiver is in a cascade link, the message to be distributed is sent to the subordinate data transmission device of the target data transmission device. Since both the lower-level data transmission device and the target data transmission device have a message distribution function, the lower-level data transmission device will further distribute the message to be distributed until it is sent to the data transmission device corresponding to the message to be distributed. If the message receiver is not in the cascade link where the target data transmission device is located, the target data transmission device does not perform any processing on the message to be distributed.

Optionally, the attribute information of the message to be distributed may further include a receiving address, and such attribute information includes the message of the receiving address to be distributed, such as a PCIe P2P transmission request message or an I / O read request message. For such messages to be distributed, the target data transmission device will judge them. If it is determined that the receiving address included in the attribute information is located in the storage space configured by the target data transmission device, the message to be distributed is sent to the target data transmission device, so that the target data transmission device processes the message to be distributed.

The target data storage device may include a first storage medium and a second storage medium, wherein the first storage medium stores inherent configuration information of each data transmission device in the cascade link, and the second storage medium stores target data transmission It can be seen that the service data of the device and the characteristics of the service data are directly related to the message processing. Therefore, the judgment process performed by the target data transmission device is to determine whether the reception address bit included in the attribute information is located at the target The storage space corresponding to the second storage medium in the data transmission device. If the receiving address is located in the storage space corresponding to the second storage medium, the target data transmission device processes the message to be distributed, specifically, the processor in the target data transmission device processes the message to be distributed. If the target data transmission device determines that the receiving address is not located in the storage space, the target data transmission device obtains the message sender of the message to be distributed, and sends the message to be distributed to the non-message sender's superior data transmission adjacent to the target data transmission device Equipment or subordinate data transmission equipment.

In addition to the various types mentioned above, the message to be distributed can also be a read response message, where the read response message can be considered as the response result of the read message, that is, the read content is returned to the issue read Message device. At this time, after receiving the read response message, the target data transmission device first determines the data transmission device that generates the read message, and then sends the read response message to the data transmission device that generates the read message. That is, the read response message is returned in the same way and sent to the data transmission device that generates the read message corresponding to the read response message.

In addition, for the content that is not described in detail in this embodiment, reference may be made to the related description in the embodiments shown in FIGS. 1 to 2, and details are not described herein again.

In this embodiment, after receiving the message to be distributed, the data transmission device distributes it according to different contents included in the attribute information of the message to be distributed, so that the target data transmission device is in the same cascade chain The upper-level data transmission equipment and the lower-level data transmission equipment in the road can realize direct communication, and no other devices such as switching chips and the like need to be connected between the equipment.

The following describes the communication process between data transmission devices in the same cascade link with a specific example:

In practical applications, the data transmission device having the internal structure shown in FIG. 1 or FIG. 2 may be an artificial intelligence customized heterogeneous computing chip, such as an independent processing unit (Neural Network Processing Unit, NPU for short) chip. At this time, a cascade link containing NPU chips may be: central processing unit (CPU) --- NPU chip --- network card --- memory chip, and the network card and memory chip in the above cascade link are also both It may have an internal structure as shown in FIG. 1 or FIG. 2.

When the NPU chip is used in a model training scenario, the NPU chip is usually used to process a large amount of training data input by the CPU to obtain training results. At this time, the NPU chip will first receive the first message to be distributed sent by the CPU. The first message to be distributed may include attribute information and message data, where the attribute information may include a receiving address, and the message data is training data.

Since the first storage medium of the NPU chip has recently stored the memory space information allocated by the operating system for this NPU, this memory space information includes the storage space corresponding to the second storage medium of the NPU chip, that is, the second storage space Memory address. Therefore, after receiving the first message to be distributed, the message distributor in the NPU chip may determine whether the reception address included in the attribute information is located in the storage space corresponding to the second storage medium according to the content stored in the first storage medium. If the receiving address included in the attribute information is located in the storage space corresponding to the second storage medium, the message distributor in the NPU chip further sends the training data in the first message to be distributed to the processor configured inside the NPU chip, and the This processor processes training data to obtain training results.

After processing, the NPU chip generates a second message to be distributed according to the training result, and sends the second message to be distributed containing the training result and the attribute information to the network card, where the attribute information of the second message to be distributed may include the receiver Location information in the cascade link. Since the network card also has the structure shown in FIG. 1 or FIG. 2, the second message to be distributed can also be distributed according to the process in each of the above embodiments, that is, the network card sends the message to be distributed according to the attribute information of the second message to be distributed Send to the memory card to make the memory card save the training results.

FIG. 5 is a schematic structural diagram of a message distribution apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes a receiving module 41 and a distribution module 42.

The receiving module 41 is configured to receive a message to be distributed.

The distribution module 42 is configured to send the message to be distributed to the device level according to the correspondence between the attribute information of the message to be distributed and the inherent configuration information of each data transmission device in the device cascade link and the service data feature information The corresponding data transmission equipment in the link.

Optionally, the inherent configuration information of the data transmission device includes the respective function identifiers of the multiple storage media configured in the data transmission device; the attribute information of the message to be distributed includes the message type and the function identifier of the message receiver;

The distribution module 42 in the device is specifically configured to: if the message type included in the attribute information is a preset type, send the message to be distributed to the receiver according to the function identifier of the message receiver included in the attribute information A storage medium with the same function identifier in the target data transmission device of the message to be distributed.

Optionally, the attribute information of the message to be distributed further includes position information of the message receiver in the cascade link of the device where the message is located;

The distribution module 42 in the device specifically includes: a determining unit 421, a modifying unit 422, and a sending unit 423.

The determining unit 421 is configured to determine whether the message receiver is a lower-level data transmission device adjacent to the target data transmission device according to the location information if the message type included in the attribute information is a non-preset type.

The modification unit 422 is configured to modify the message type of the message to be distributed to the preset type if the message recipient is a lower-level data transmission device adjacent to the target data transmission device.

The sending unit 423 is configured to send the modified message to be distributed to the subordinate data transmission device.

Optionally, the distribution module 42 in the apparatus is specifically configured to: if the message receiver is not a subordinate data transmission device adjacent to the target data transmission device, determine the location according to the location information included in the attribute information Whether the message receiver is in the device cascade link where the target data transmission device is located; and if the message receiver is in the device cascade link where the target data transmission device is located, then the Distribute the message to the subordinate data transmission device, so that the subordinate data transmission device forwards the message to be distributed.

Optionally, the distribution module 42 in the apparatus is further specifically configured to: if the message receiver is not in the device cascade link where the target data transmission device is located, not process the message to be distributed.

Optionally, the attribute information of the message to be distributed includes a receiving address;

The distribution module 42 in the apparatus is further specifically configured to: if the receiving address included in the attribute information is located in a storage space configured by the target data transmission device that receives the message to be distributed, send the message to be distributed to the target A data transmission device, so that the target data transmission device processes the message to be distributed.

Optionally, the distribution module 42 in the apparatus specifically further includes: an obtaining unit 424, configured to obtain the message sender of the message to be distributed if the receiving address is not located in a storage space configured by the target data transmission device .

The sending unit 423 is configured to send the message to be distributed to an upper-level data transmission device or a lower-level data transmission device adjacent to the target data transmission device that is not a message sender.

Optionally, the message to be distributed is a read response message;

The apparatus also includes a determination module 43 for determining a data transmission device that generates a read message corresponding to the read response message.

The sending module 42 is also used to send the read response message to the data transmission device that generates the read message.

The device shown in FIG. 5 can execute the method of the embodiment shown in FIG. 4. For the parts that are not described in detail in this embodiment, refer to the related description of the embodiment shown in FIG. For the execution process and technical effects of this technical solution, refer to the description in the embodiment shown in FIG. 4, and details are not described herein again.

The device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located One place, or can be distributed to multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement without paying creative labor.

Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by adding a necessary universal hardware platform, and of course, can also be implemented by a combination of hardware and software. Based on this understanding, the above technical solution can be embodied in the form of a computer product in essence or part of the contribution to the existing technology, and the present invention can adopt one or more computer-usable storages containing computer-usable program code The form of computer program products implemented on media (including but not limited to disk storage, CD-ROM, optical storage, etc.).

The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram and a combination of the flow and / or block in the flowchart and / or block diagram may be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, special-purpose computer, embedded processing machine, or other programmable data processing device to produce a machine that enables the generation of instructions executed by the processor of the computer or other programmable data processing device An apparatus for realizing the functions specified in one block or multiple blocks of one flow or multiple flows of a flowchart and / or one block or multiple blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, the instructions The device implements the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and / or block diagrams.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operating steps are performed on the computer or other programmable device to produce computer-implemented processing, which is executed on the computer or other programmable device The instructions provide steps for implementing the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and / or block diagrams.

In a typical configuration, the computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

Memory may include non-permanent memory, random access memory (RAM) and / or non-volatile memory in computer-readable media, such as read only memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.

Computer-readable media, including permanent and non-permanent, removable and non-removable media, can store information by any method or technology. The information may be computer readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, read-only compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, Magnetic tape cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. As defined in this article, computer-readable media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that they can still The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (19)

1. A data transmission device, comprising: a message distributor, a first interface, a second interface, a first storage medium, and a second storage medium respectively connected to the message distributor;

   The first storage medium stores inherent configuration information of each data transmission device on the same cascade link as the data transmission device;

   The second storage medium stores service data characteristic information of the data transmission device;

   The message distributor is used to receive the message to be distributed; according to the correspondence between the attribute information of the message to be distributed and the inherent configuration information and the service data feature information, the message to be distributed through the The first interface or the second interface is sent to the corresponding data transmission device in the cascade link.
2. The device according to claim 1, wherein the inherent configuration information includes respective function identifiers of the first storage medium and the second storage medium; the attribute information of the message to be distributed includes a message type and a message Recipient's functional identification;

   The message distributor is specifically configured to: if the message type included in the attribute information is a preset type, send the message to be distributed to the message according to the function identifier of the message receiver included in the attribute information The storage medium with the same function identifier in the data transmission device.
3. The device according to claim 2, wherein the attribute information of the message to be distributed further includes position information of the message receiver in the cascade link where it is located;

   The message distributor is further specifically configured to: if the message type included in the attribute information is a non-preset type, determine whether the message receiver is lower-level data adjacent to the data transmission device according to the location information transmission device;

   If the message receiver is a subordinate data transmission device adjacent to the data transmission device, modify the message type of the message to be distributed to the preset type; and send the modified message to be distributed to the subordinate data transmission device.
4. The device according to claim 3, wherein the message distributor is further used to:

   If the message receiver is not a lower-level data transmission device adjacent to the data transmission device, determine whether the message receiver is in the cascade link where the data transmission device is located according to the location information;

   If the message receiver is in the cascade link where the data transmission device is located, send the message to be distributed to the subordinate data transmission device, so that the subordinate data transmission device forwards the message to be distributed .
5. The device according to claim 4, wherein the message distributor is further configured to:

   If the message receiver is not in the cascade link where the data transmission device is located, the message to be distributed is not processed.
6. The device according to claim 1, wherein the device further comprises: a processor; the attribute information of the message to be distributed includes a receiving address;

   The message distributor is further configured to: if the receiving address included in the attribute information is located in a storage space corresponding to the second storage medium, send the message to be distributed to the processor, so that the processor Process the message to be distributed.
7. The device according to claim 6, wherein the message distributor is further configured to:

   If the receiving address is not located in the storage space where the second storage medium is located, acquire the message sender of the message to be distributed; send the message to be distributed to a non-message sender, which is related to the data transmission device Adjacent superior data transmission equipment or subordinate data transmission equipment.
8. The device according to any one of claims 1 to 5, wherein the message to be distributed is a read response message;

   The message distributor is specifically configured to determine a data transmission device that generates a read message corresponding to the read response message; send the read response message to the data transmission device that generates the read message.
9. A processing system, comprising: a controller, a first data transmission device, and a second data transmission device connected in sequence;

   The controller is configured to generate a message to be distributed and send the message to be distributed to the first data transmission device;

   The first data transmission device is configured to respectively according to the attribute information of the message to be distributed and the inherent configuration information of each data transmission device stored in the first data transmission device and the service data of the first data transmission device The correspondence between the characteristic information is that the message to be distributed is sent to the second data transmission device through the first interface of the first data transmission device.
10. The system according to claim 9, wherein the system further comprises: a third data transmission device connected to the second data transmission device;

    The first data transmission device and the third data transmission device are used to generate a message to be distributed and send the message to be distributed to the second data transmission device;

    The second data transmission device is configured to receive messages to be distributed sent by the first data transmission device and the third data transmission device; according to the attribute information of the message to be distributed, respectively, to the second data transmission device The stored correspondence between the inherent configuration information of each data transmission device and the service data characteristic information of the second data transmission device sends the message to be distributed to the first interface of the second data transmission device The third data transmission device or sent to the first data transmission device through the second interface of the second data transmission device.
11. A message distribution method is characterized by including:

    Receive messages to be distributed;

    Send the message to be distributed to the device cascade chain according to the correspondence between the attribute information of the message to be distributed and the inherent configuration information of each data transmission device and service data feature information in the device cascade link The corresponding data transmission equipment in the road.
12. The method according to claim 11, wherein the inherent configuration information of the data transmission device includes respective function identifiers of a plurality of storage media configured in the data transmission device; the attribute information of the message to be distributed includes the message type and The functional identification of the message receiver;

    Sending the message to be distributed to the device level according to the correspondence between the attribute information of the message to be distributed and the inherent configuration information and service data characteristic information of each data transmission device in the device cascade link The corresponding data transmission equipment in the link includes:

    If the message type included in the attribute information is a preset type, the message to be distributed is sent to the target data transmission device that receives the message to be distributed according to the function identifier of the message receiver included in the attribute information Storage media with the same functional identification.
13. The method according to claim 12, wherein the attribute information of the message to be distributed further includes position information of the message receiver in the cascade link of the device where the message is located;

    The method also includes:

    If the message type included in the attribute information is a non-preset type, determine whether the message receiver is a lower-level data transmission device adjacent to the target data transmission device according to the location information;

    If the message receiver is a lower-level data transmission device adjacent to the target data transmission device, modify the message type of the message to be distributed to the preset type;

    Sending the modified message to be distributed to the subordinate data transmission device.
14. The method of claim 13, wherein the method further comprises:

    If the message receiver is not a subordinate data transmission device adjacent to the target data transmission device, determine whether the message receiver is in the device where the target data transmission device is located according to the location information included in the attribute information In the cascade link;

    If the message receiver is in the device cascade link where the target data transmission device is located, send the message to be distributed to the subordinate data transmission device, so that the subordinate data transmission device forwards the message Distribute the message.
15. The method according to claim 14, wherein the method further comprises:

    If the message receiver is not in the device cascade link where the target data transmission device is located, the message to be distributed is not processed.
16. The method according to claim 11, wherein the attribute information of the message to be distributed includes a receiving address;

    Sending the message to be distributed to the device level according to the correspondence between the attribute information of the message to be distributed and the inherent configuration information and service data characteristic information of each data transmission device in the device cascade link The corresponding data transmission equipment in the link includes:

    If the receiving address included in the attribute information is located in the storage space configured by the target data transmission device that receives the message to be distributed, send the message to be distributed to the target data transmission device, so that the target data transmission device Process the message to be distributed.
17. The method according to claim 16, wherein the method further comprises:

    If the receiving address is not located in the storage space configured by the target data transmission device, obtain the message sender of the message to be distributed;

    Sending the message to be distributed to a superior data transmission device or a subordinate data transmission device adjacent to the target data transmission device that is not a message sender.
18. The method according to any one of claims 11 to 15, wherein the message to be distributed is a read response message; the method further comprises:

    Determine a data transmission device that generates a read message corresponding to the read response message;

    Sending the read response message to the data transmission device that generated the read message.
19. A message distribution device is characterized by comprising:

    The receiving module is used to receive the message to be distributed;

    The distribution module is configured to send the message to be distributed to all the devices according to the correspondence between the attribute information of the message to be distributed and the inherent configuration information of each data transmission device in the device cascade link and the service data feature information The corresponding data transmission device in the device cascade link.

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