WO2019015449A1

WO2019015449A1 - Srio-based hot plug method, hot plug apparatus and hot plug device, and storage medium

Info

Publication number: WO2019015449A1
Application number: PCT/CN2018/093032
Authority: WO
Inventors: 刘小刚; 余中云; 包晓瑜
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-07-21
Filing date: 2018-06-27
Publication date: 2019-01-24
Also published as: CN109284245A

Abstract

Provided are an SRIO-based hot plug method, hot plug apparatus and hot plug device, and a storage medium. The method comprises: in the state that a local terminal single board and an opposite terminal single board are interconnected via an SRIO, the local terminal single board detecting a port state, and according to a detection result of the port state, determining whether there is a hot plug-in operation or a hot plug-out operation at an opposite terminal port; if it is determined that there is a hot plug-in operation at the opposite terminal port, the local terminal single board performing port recovery processing, and starting SRIO data transceiving; and if it is determined that there is a hot plug-out operation at the opposite terminal port, the local terminal single board prohibiting SRIO data transceiving.

Description

SRIO-based hot plugging method, hot plugging device, hot plugging device and storage medium

Technical field

The present disclosure relates to the field of communications, and in particular, to a hot plug method based on a high speed serial interface (SRIO), a hot plug device, a hot plug device, and a storage medium.

Background technique

As a new generation of high-speed interconnect technology, SRIO is widely used in interconnect interfaces for high-performance microprocessors and systems, supporting chip-to-chip and board-to-board communication. SRIO hot swap refers to the dynamic insertion and removal of one of the boards connected through SRIO while the system is running, without affecting the normal operation of the system.

Because the SRIO protocol does not define a hot-swap specification at the physical layer, the transport layer, and the logical layer, the SRIO link cannot be restored during the hot swap, which affects the data communication between the two boards connected through the SRIO.

The current solution in the industry is to reset the two boards connected through the SRIO. The disadvantage of this method is that the two interconnected boards take a long time to complete the system initialization, and all services of the board are in the reset period. Interrupt status.

Summary of the invention

An SRIO-based hot plugging method, a hot plug device, a hot plug device, and a storage medium are provided in the embodiments of the present disclosure.

An SRIO-based hot plugging method according to an embodiment of the present disclosure includes: in a state in which a local board and a peer board are interconnected through a high-speed serial interface SRIO, the local board pair port The state is detected, and according to the detection result of the port state, it is determined whether there is a hot plug operation or a hot pull operation on the peer port; if it is determined that the peer port has a hot plug operation, the local board performs port recovery. Processing and starting the SRIO data transmission and reception; and if it is determined that the remote port has a hot-pull operation, the local board prohibits the SRIO data transmission and reception.

An SRIO-based hot-swap device according to an embodiment of the present disclosure includes: a plug-and-play determination module configured to perform port state in a state in which a local board and a peer board are interconnected by SRIO Detecting, and determining whether there is a hot plug operation or a hot pull operation on the peer port according to the detection result of the port state; the first processing module is configured to perform port recovery if it is determined that the peer port has a hot plug operation Processing and starting SRIO data transceiving; and a second processing module configured to disable SRIO data transmission and reception if it is determined that the peer port has a hot pull operation.

An SRIO-based hot-swappable device according to an embodiment of the present disclosure includes: a processor configured to detect a port state in a state in which a local board and a peer board are interconnected by SRIO, And determining whether there is a hot plug operation or a hot pull operation on the peer port according to the detection result of the port state, wherein if it is determined that the peer port has a hot plug operation, performing port recovery processing, and starting SRIO data transmission and reception, If it is determined that the peer port has a hot pull operation, the SRIO data transmission and reception is prohibited; and the memory is configured to store a program for execution by the processor.

A storage medium according to an embodiment of the present disclosure stores a program executable by a processor, which causes the processor to perform the following steps:

When the local board and the peer board are interconnected through the high-speed serial interface SRIO, the status of the port is detected, and according to the detection result of the port status, whether the hot-plug operation or the hot-pull operation of the opposite port exists is determined. If it is determined that the peer port has a hot plug operation, performing port recovery processing and starting SRIO data transmission and reception; and if it is determined that the peer port has a hot pull operation, the SRIO data transmission and reception is prohibited.

DRAWINGS

1 is a flow chart of an SRIO-based hot plug method provided in accordance with an embodiment of the present disclosure;

2 is a block diagram of an SRIO-based hot plug device provided in accordance with an embodiment of the present disclosure;

3 is a block diagram of an SRIO-based hot plug device provided in accordance with an embodiment of the present disclosure;

4 is an application scenario diagram of an SRIO-based hot plug device according to an embodiment of the present disclosure;

FIG. 5 is a functional block diagram of an SRIO-based hot plug device according to another embodiment of the present disclosure; and

6 is a flow diagram of an embodiment of an SRIO based hot plug method provided in accordance with an embodiment of the present disclosure.

Detailed ways

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

FIG. 1 is a flowchart of an SRIO-based hot plug method according to an embodiment of the present disclosure. As shown in FIG. 1, the method includes:

Step S101: The local board detects the port status in the state that the local board is connected to the peer board through the high-speed serial interface SRIO, and determines whether the peer port is based on the detection result of the port status. There is a hot insertion operation or a hot extraction operation.

Step S101 includes a step of detecting a port state and a determining step of a hot plug operation of the peer port.

In an exemplary embodiment, the detecting step of the port status includes:

1. If the port initialization state acquired by the local board is a failure state, it is determined that the detection result of the port state is an unplugged state;

2. If the port initialization state acquired by the local board is a successful state, the input/output error state is an error state without input and output, and the port mode reaches a specified mode and the number of channel synchronizations does not decrease, then the port state is determined. The detection result is an insertion state;

3. If the port initialization state acquired by the local board is a successful state, but the input/output error state is an input or output error state or the channel synchronization number decreases, it is determined that the port state detection result is inserted. status.

In an exemplary embodiment, the determining step of the peer port hot plug operation includes:

1. If the last detection result of the port state is the unplugged state and the current detection result of the port state is the inserted state, it is determined that the peer port has a hot plug operation;

2. If the last detection result of the port state is the inserted state, the current detection result of the port state is the unplugged state, and one or more subsequent detection results of the port state are the unplugged state, then Determining that the opposite port has a hot pull operation;

3. If the last detection result of the port state is an inserted state, the current detection result of the port state is an unplugged state, and at least one of one or more subsequent detection results of the port state is an inserted state. And determining that the opposite port has no hot extraction operation.

Step S102: If it is determined that the peer port has a hot plug operation, the local board performs port recovery processing and starts SRIO data transmission and reception.

The step of performing the port recovery process on the local board in the step S102 includes: the local board is configured to close the local port, clear the sending buffer of the local port, receive the buffer and the port hardware error status, and then The local port is set to enable recovery of the connection with the peer.

Step S103: If it is determined that the remote port has a hot-pull operation, the local board prohibits SRIO data transmission and reception.

After the step of disabling the SRIO data transmission and reception in the local board in the step S103, the method further includes the step of performing a port recovery process on the local board, for example, including: closing the local port and clearing the local port status. Then, the local port is enabled to wait for the peer board to be inserted.

It will be understood by those skilled in the art that all or part of the steps of the above embodiments may be implemented by a program to instruct related hardware, and the program may be stored in a computer readable storage medium, and the program is executed. When it is, step S101 to step S103 are included. Further, the present disclosure may further provide a storage medium on which a computer program is stored. When the program is executed by the processor, at least steps S101 to S103, that is, the local board and the opposite board pass the high-speed serial interface. If the hot-plug operation is performed on the peer port, the local board is configured to perform the hot-plug operation or the hot-plug operation on the peer port. The port is restored and the SRIO data is sent and received. If it is determined that the remote port is hot-swappable, the SRIO data transmission and reception of the local board is prohibited. Herein, the storage medium may include a ROM/RAM, a magnetic disk, an optical disk, and a USB flash drive.

2 is a block diagram of an SRIO-based hot plug device according to an embodiment of the present disclosure. As shown in FIG. 2, the hot plug device includes: a plug determination module, a first processing module, and a second processing module.

The plug-in determination module is configured to detect the state of the port when the local board and the peer board are interconnected by the SRIO, and determine whether the peer port has a hot-plug operation according to the detection result of the port state. Hot pull out operation.

The first processing module is configured to perform port recovery processing and initiate SRIO data transmission and reception if it is determined that the peer port has a hot insertion operation.

The second processing module is configured to disable SRIO data transmission and reception if it is determined that the peer port has a hot pull operation.

The operation of the device will be described in detail below.

The plug determination module first detects the port status. Specifically, if the acquired port initialization state is a failure state, the plug determination module determines that the detection result of the port state is an unplugged state; if the acquired port initialization state is a successful state, the input and output error state is no input and output. The error state, the port mode reaches the specified mode and the number of channel synchronizations does not decrease, and the plug determination module determines that the detection result of the port state is an inserted state.

The plugging and determining module determines the hot plug operation of the peer port according to the detection result of the port state. Specifically, the plug determination module determines that the peer port has a hot insertion operation when the last detection result of the port state is an unplugged state and the current detection result of the port state is an inserted state; The last detection result of the port state is an insertion state, and the current detection result of the port state is an unplugged state, and when one or more subsequent detection results of the port state are all pulled out, the determination is performed. The opposite port has a hot pull operation.

If it is determined that there is a hot plug operation on the peer port, the first processing module closes the local port, clears the sending buffer, the receiving buffer, and the port hardware error status of the local port, and enables the local port to be enabled. The connection with the peer end, and then start the SRIO data transmission and reception; if it is determined that the remote port has a hot pull operation, the second processing module prohibits the SRIO data from being sent and received, and then closes the local port, and clears the local port's send buffer and receive buffer. And the port hardware error status, the local port is set to be enabled, so that the peer board is inserted.

3 is a block diagram of an SRIO-based hot plug device according to an embodiment of the present disclosure. As shown in FIG. 3, the hot plug device includes:

The processor is configured to detect the state of the port when the local board and the peer board are interconnected by the SRIO, and determine whether the peer port has a hot plug operation or hot pull according to the detection result of the port status. In the operation, if it is determined that the peer port has a hot plug operation, the port recovery process is performed, and the SRIO data is transmitted and received; if it is determined that the peer port has a hot pull operation, the SRIO data is prohibited from being transmitted and received;

A memory configured to store a program for execution by the processor, the memory being communicable with the processor.

The local board is connected to the peer board through a physical link. When the SRIO link is not restored, the peer board can still send the underlying information to the local board through the physical link. The local board updates the local port status register according to the received information, so as to determine the in-position status of the peer board and finally implement link recovery. After the SRIO link is restored, the local board and the remote board perform SRIO data transmission and reception.

4 is an application scenario diagram of an SRIO-based hot plug device according to an embodiment of the present disclosure. As shown in FIG. 4, the SRIO on the board A and the board B passes through the serializer/deserializer on the backplane. (SERializer/DESerializer, serdes) is interconnected. When hot swapping is performed on the board A, the SRIO-based hot plugging device on the board B detects and recovers the link. When the board B is hot After the plug-in operation, the SRIO-based hot plug device on the board A detects and recovers the link.

FIG. 5 is a functional block diagram of an SRIO-based hot plug device according to another embodiment of the present disclosure. As shown in FIG. 5, the hot plug device includes: a timing module, a port state detection module, and a port state recording module. The port plugging and judging module, the port state recovery module, and the port status indicating module. The above-mentioned function modules cooperate with each other to detect the hot swap operation of the board and restore the link to ensure that the peer board can continue to work normally. In an exemplary embodiment, the port state detecting module, the port state recording module, and the port plugging and determining module implement the function of the plugging and unplugging module of FIG. 2, and the port state recovery module and the port state indicating module jointly implement the first and the second of FIG. The function of the second processing module.

In an exemplary embodiment, the timing module is configured to repeatedly initiate the port state detection module at a specified timing interval, and record the detection result into the port state recording module. The port insertion and determination module performs insertion and removal determination on the peer port according to the record in the port state record module. If it is determined that the peer port has a hot plug operation, the port state recovery module clears the port state, and the port plug determination module updates the state of the port state indication module; if the port insertion and removal determination module decides to the opposite end If there is a hot pull operation, the port plug determination module updates the state of the port status indication module, and the port status recovery module clears the port status. After the above port insertion and extraction judgment is completed, the next timing time of the timing module is waited for, and the above process is repeated.

In an exemplary embodiment, the port state detection module is configured to acquire a port initialization state and a port mode (ie, the port is in a mode of 1x, 2x, 4x, 8x, etc.). If the port initialization status is successful, the port has no input error and output error, the port mode reaches the specified mode, and when the number of channel synchronization drops, the port is determined to be inserted; if the port initialization status is successful, but the port has input If the error or output error occurs, or the number of channel synchronizations on the port decreases, it is determined that the port is in the connected state; if the port initialization state is in the failed state, it is determined that the port is in the unplugged state.

In an exemplary embodiment, the port plug determination module is configured to read a record in the port record module, compare the last port state and the current port state, and determine whether the peer end has a plug operation. Specifically, if the last port state is the unplugged state and the secondary port state is the inserted state, it is determined that there is a hot plug operation at the opposite end. At this time, the port hot plug processing module (which is a submodule of the port state recovery module) clears the port buffer and the error state, and the port plug determination module updates the state of the port status indication module. If the last port state is the inserted state and the secondary port state is the unplugged state, the port state detecting module performs one or more port state detections at intervals. If at least one of the port state detection results is inserted in one or more times, it is determined that the peer end has no hot pull operation. If the one or more detection results are all pulled out, the hot swap operation is determined, and the port insertion and determination module updates the state of the port status indication module, and the port status recovery module clears the port. status.

In an exemplary embodiment, the port state recovery module is configured to close the port, then clear the port's transmit buffer, receive buffer, and port hardware error status, and then enable the port.

In an exemplary embodiment, the port status recording module is configured to record the last and current port status, and the port plug determination module performs the pair port according to the record in the port status record module. Plug and drop judgment.

In an exemplary embodiment, the port status indication module is configured to control whether SRIO data transceiving is possible. Specifically, when the port plugging and judging module determines that the peer port has a hot plug operation, the port state indicating module controls to enable SRIO data transmission and reception; and when the port plugging and judging module determines that the peer port is hot pulled When the operation is performed, the port status indication module controls prohibiting data transmission and reception.

The operation of the device will be described in detail below.

The timing module sets the timing. After the timing moment arrives, the port state detection module detects the port state and records the result in the port state recording module.

The port insertion and determination module reads the record in the port state record module, and determines whether the peer port has a hot plug operation according to the record.

If the port insertion and determination module determines that there is a hot plug operation at the opposite end, the port state recovery module first closes the port, and then clears the port's transmit buffer, receive buffer, and port hardware error status, and then sets the port to enable. In order to restore the SRIO link. The port insertion and determination module updates the state of the port status indication module.

If the port insertion and determination module determines that there is a hot extraction operation at the opposite end, the port insertion determination module updates the state of the port status indication module. The port state recovery module first closes the port, and then clears the port's transmit buffer, receive buffer, and port hardware error status, and then sets the port to be enabled to wait for the peer board to be inserted.

After the above port insertion and extraction judgment is completed, the next timing time of the timing module is waited for, and the above process is repeated.

6 is a flowchart of an embodiment of an SRIO-based hot plug method according to an embodiment of the present disclosure. As shown in FIG. 6, the embodiment mainly includes the following steps:

Step 1: When the system is initialized, the timer is used as a timing module, configured as a 1s timing time and configured as a repeating mode.

Step 2: After the 1s timing of the timer is arrived, the port state detection module obtains the current state of the port by querying the mode register and the state control register of the SRIO port: if the initialization success status bit (bit) in the port state control register is 1 The input error and output error status bits in the port status control register are both 0, and the mode in the port mode register indicates that the number of channel synchronizations is not decreased, the port status detection module determines that the current status of the port is the inserted state; if the port status control The initialization success status bit in the register is 1, but the input error bit in the port status register is 1, or the output error bit is 1, or the mode in the port mode register indicates that the number of channel synchronization drops, the port status detection module determines The current state of the port is the connection state; if the initialization success bit in the port state control register is 0, the port state detection module determines that the current state of the port is the unplugged state.

Step 3: The port state detection module stores the detected current state of the port into the port state record module.

Step 4: The port plugging and judging module reads the port last state detection result and the current state result of the port in the port state recording module, and determines whether the port currently has a hot plug operation according to the two state records.

Step 5: If the last port state detection result is the unplugged state and the current port state detection result is the inserted state, the port plugging and judging module determines that the peer port has a hot plug operation, and the port state recovery module clears the port's send buffer and receives. Cache, clear the error status of the port, and the port status indication module notifies the SRIO data sending module to enable the data sending function.

Step 6: If the result of the last port state detection is the inserted state and the current port state detection result is the unplugged state, the port state detection module adds the port state twice every 10 us. If the next two detection results are inserted at least once, the port insertion and determination module determines that the peer port has no hot pull operation; if the next two test results are all pulled out, the port is plugged and unplugged. The judging module judges that the peer end has a hot pull operation, and the port state recovery module clears the send buffer and the receive buffer, clears the port hardware error state, and the port status indication module notifies the SRIO data sending module to prohibit the data sending function.

Step 7: After the above detection process is completed, wait for the next 1s timing of the timing timer to arrive, and repeat the above detection process.

In summary, the SRIO-based hot plug method and apparatus according to an embodiment of the present disclosure may have the following technical effects:

1. Implement monitoring and recovery of links in software mode;

2. The peer board does not need to be reset to improve the stability of the board running.

3. The SRIO link recovery time is short;

4. Do not interrupt other services except SRIO related services.

Although the present disclosure has been described in detail above, the present disclosure is not limited thereto, and various modifications may be made by those skilled in the art in accordance with the principles of the present disclosure. Therefore, modifications made in accordance with the principles of the present disclosure are to be understood as falling within the scope of the present disclosure.

Claims

A SRIO-based hot plug method, including:

The local board detects the port status in the state that the local board is connected to the peer board through the high-speed serial interface SRIO, and determines whether the peer port has hot plug according to the detection result of the port status. Operation or hot extraction operation;

If it is determined that the remote port has a hot plug operation, the local board performs port recovery processing and starts SRIO data transmission and reception;

If it is determined that the remote port has a hot-pull operation, the local board prohibits SRIO data transmission and reception.
The method according to claim 1, wherein the step of determining whether the peer port has a hot plug operation or a hot pull operation according to the detection result of the port state comprises:

Determining that the peer port has a hot plug operation if the last detection result of the port state is an unplugged state and the current detection result of the port state is an inserted state;

If the last detection result of the port state is an insertion state, the current detection result of the port state is an unplugged state, and one or more subsequent detection results of the port state are all pulled out, determining The opposite port has a hot pull operation.
The method of claim 2, wherein the step of detecting, by the local board, the port status comprises:

The local board acquires a port initialization state, an input/output error state, and a port mode.

If the port initialization state is a failure state, determining that the detection result of the port state is an unplugged state;

If the port initialization state is a successful state, the input/output error state is an error state without input and output, and the port mode reaches a specified mode and the number of channel synchronizations does not decrease, it is determined that the detection result of the port state is an inserted state.
The method of claim 1, wherein the step of performing port recovery processing on the local board comprises:

The local board closes the local port, and clears the sending buffer, the receiving buffer, and the port hardware error status of the local port;

The local board is configured to enable the local port to restore the connection with the peer end.
The method according to any one of claims 1 to 4, wherein, after determining that the remote port has a hot-pull operation, the local board prohibits SRIO data transmission and reception, the method further includes: The local board performs port recovery processing.
A SRIO-based hot swap device, comprising:

The plug-in determination module is configured to detect the state of the port when the local board and the peer board are interconnected by the SRIO, and determine whether the peer port has a hot-plug operation according to the detection result of the port state. Hot extraction operation;

a first processing module configured to perform port recovery processing and initiate SRIO data transmission and reception if it is determined that the peer port has a hot insertion operation;

The second processing module is configured to disable SRIO data transmission and reception if it is determined that the peer port has a hot pull operation.
The apparatus according to claim 6, wherein said plug determination module is further configured to be configured when a last detection result of said port state is an unplugged state and a current detection result of said port state is an inserted state, Determining that the peer port has a hot plug operation; the last detection result of the port state is an insert state, and the current detection result of the port state is an unplugged state, and one or more subsequent states of the port state When the detection result is in the unplugged state, it is determined that the opposite port has a hot extraction operation.
The apparatus according to claim 7, wherein said plug determination module is further configured to acquire a port initialization state, an input/output error state, and a port mode; and if said port initialization state is a failure state, determining said port state The detection result is the unplugged state; if the port initialization state is a successful state, the input/output error state is an error state without input and output, and the port mode reaches the specified mode and the channel synchronization number does not decrease, then the port state is determined. The result of the test is the inserted state.
A SRIO-based hot plug device that includes:

The processor is configured to detect the state of the port when the local board and the peer board are interconnected by the SRIO, and determine whether the peer port has a hot plug operation or hot pull according to the detection result of the port status. In the operation, if it is determined that the peer port has a hot plug operation, performing port recovery processing, and starting SRIO data transmission and reception, and if it is determined that the peer port has a hot pull operation, prohibiting SRIO data transmission and reception;

A memory configured to store a program for execution by the processor.
A storage medium storing a program executable by a processor, the program causing the processor to perform the following steps:

When the local board and the peer board are interconnected through the high-speed serial interface SRIO, the status of the port is detected, and according to the detection result of the port status, whether the hot-plug operation or the hot-pull operation of the opposite port exists is determined. ;

If it is determined that the peer port has a hot plug operation, performing port recovery processing and starting SRIO data transmission and reception;

If it is determined that the peer port has a hot pull operation, the SRIO data transmission and reception is prohibited.