CN112015689A - Serial port output path switching method, system and device and switch - Google Patents
Serial port output path switching method, system and device and switch Download PDFInfo
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- CN112015689A CN112015689A CN201910456493.2A CN201910456493A CN112015689A CN 112015689 A CN112015689 A CN 112015689A CN 201910456493 A CN201910456493 A CN 201910456493A CN 112015689 A CN112015689 A CN 112015689A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
Abstract
The application discloses serial ports output path switching system includes: a management processor, a programmable logic device and a main processor; the management processor is used for setting a control value for controlling the switching of the serial port; and the programmable logic device is used for switching the serial port data output path of the main processor according to the control value. By adopting the serial port output path switching system, the problem that the operation and maintenance efficiency is reduced when the serial port data of the Host CPU is acquired through the out-of-band network of the BMC in the prior art is solved.
Description
Technical Field
The application relates to the technical field of computers, in particular to a serial port output path switching system, and further relates to two serial port output path switching methods and devices, a data processing method and device, electronic equipment and a switch.
Background
Currently, in some data center switch system architectures, a Host CPU (main processor) and a BMC (Baseboard Management Controller, a processor for managing power, temperature, and abnormality monitoring in a switch) are used as two independent processors, and each processor has a serial port. In order to save the space of the panel and unify the access interfaces, the switch only provides a physical serial port to the outside on the panel. The operation and maintenance personnel need to access the serial port of the Host CPU and the serial port of the BMC through the physical serial port.
In the prior art, some data center switches provide the function of acquiring the serial port data of the Host CPU through the out-of-band network of the BMC, the BMC is required to be logged in first, and the Host CPU serial port is switched back from the panel through extra operation, so that the operation and maintenance efficiency is reduced.
Disclosure of Invention
The application provides a serial port output path switching system to solve the problem that in the prior art, the operation and maintenance efficiency is reduced when the out-of-band network of BMC acquires the serial port data of a Host CPU.
The application provides a serial ports output path switching system, includes: a management processor, a programmable logic device and a main processor;
the management processor is used for setting a control value for controlling the switching of the serial port;
and the programmable logic device is used for switching the serial port data output path of the main processor according to the control value.
Optionally, the management processor is specifically configured to:
when the management processor detects that a service link between the management processor and a client is established, setting the control value as a first preset value; alternatively, the first and second electrodes may be,
and when the management processor detects that a service link with the client is established, setting the control value as a second preset value.
Optionally, the programmable logic device is specifically configured to:
when the control value is a first preset value, the serial port data of the main processor is output to the management processor;
and when the control value is a second preset value, outputting the serial port data of the main processor to a panel serial port.
Optionally, the management processor is further configured to:
and when the control value is a first preset value, the serial port data output to the main processor of the management processor is accessed by the client through the service link between the client and the serial port data.
Optionally, the programmable logic device is further configured to:
and when the control value is a first preset value, outputting the serial port data of the management processor to the panel serial port.
Optionally, the programmable logic device is further configured to:
detecting a character string input to a serial port of a panel;
and setting a control value for controlling serial port switching according to the character string.
Optionally, the programmable logic device is specifically configured to:
when the character string is detected to be a preset first character string, setting the control value to be a first preset value;
and when the character string is detected to be a preset second character string, setting the control value to be a second preset value.
Optionally, the programmable logic device is specifically configured to:
and when the control value set according to the character string is different from the control value set according to the detection result of the management processor, the programmable logic device switches the serial port data output path of the main processor according to a preset arbitration rule.
Optionally, the programmable logic device is specifically configured to:
and switching the serial port data output path of the main processor according to the preemptive strategy.
Optionally, the programmable logic device is specifically configured to:
and the programmable logic device switches the serial port data output path of the main processor according to the time sequence of setting the control value.
The application also provides an electronic device comprising the system of any one of the above.
The application also provides a serial port output path switching method, which comprises the following steps:
the management processor sets a control value for controlling the switching of the serial port;
and the programmable logic device switches the serial port data output path of the main processor according to the control value.
Optionally, the setting, by the management processor, of a control value for controlling serial port switching includes:
when the management processor detects that a service link between the management processor and a client is established, the management processor sets the control value to be a first preset value; alternatively, the first and second electrodes may be,
and when the management processor detects that a service link with a client is disconnected, the management processor sets the control value to be a second preset value.
Optionally, the switching, by the programmable logic device, the serial port data output path of the main processor according to the control value includes:
when the control value is a first preset value, the programmable logic device outputs serial port data of the main processor to the management processor;
and when the control value is a second preset value, the programmable logic device outputs the serial port data of the main processor to a panel serial port.
Optionally, the method further includes:
and when the control value is a first preset value, the serial port data output to the main processor of the management processor is accessed by the client through the service link between the client and the serial port data.
Optionally, the method further includes:
and when the control value is a first preset value, the programmable logic device outputs the serial port data of the management processor to the panel serial port.
Optionally, the method further includes:
the programmable logic device detects a character string input to a panel serial port;
and setting a control value for controlling serial port switching according to the character string.
Optionally, the setting a control value for controlling serial port switching according to the character string includes:
when the character string is detected to be a preset first character string, setting the control value to be a first preset value;
and when the character string is detected to be a preset second character string, setting the control value to be a second preset value.
Optionally, the switching, by the programmable logic device, the serial port data output path of the main processor according to the control value includes:
and when the control value set according to the character string is different from the control value set according to the detection result of the management processor, the programmable logic device switches the serial port data output path of the main processor according to a preset arbitration rule.
Optionally, the programmable logic device switches the serial port data output path of the main processor according to a preset arbitration rule, including:
and the programmable logic device switches the serial port data output path of the main processor according to the preemptive strategy.
Optionally, the switching, by the programmable logic device, the serial port data output path of the main processor according to the preemptive policy includes:
and the programmable logic device switches the serial port data output path of the main processor according to the time sequence of setting the control value.
Optionally, the switching, by the programmable logic device, the serial port data output path of the main processor according to the control value includes:
and the serial port control logic of the programmable logic device switches the serial port data output path of the main processor according to the control value.
The present application further provides a data processing method, including:
detecting whether a service link with a client is established;
and setting a control value for controlling the serial port switching according to the detection result.
Optionally, the setting a control value for controlling the serial port to switch according to the detection result includes:
when the establishment of a service link with a client is detected, setting the control value as a first preset value; alternatively, the first and second electrodes may be,
and when the disconnection of the service link with the client is detected, setting the control value as a second preset value.
Optionally, the method further includes:
and when the control value is a first preset value, the serial port data output to the main processor of the management processor is accessed by the client through the service link between the client and the serial port data.
The application further provides a serial port output path switching method, which includes:
obtaining a control value for controlling serial port switching;
and switching the serial port data output path of the main processor according to the control value.
Optionally, the switching the serial port data output path of the main processor according to the control value includes:
when the control value is a first preset value, the serial port data of the main processor is output to the management processor;
and when the control value is a second preset value, outputting the serial port data of the main processor to a panel serial port.
Optionally, the method further includes:
and when the control value is a first preset value, outputting the serial port data of the management processor to the panel serial port.
Optionally, the method further includes:
detecting a character string input to a serial port of a panel;
and setting a control value for controlling serial port switching according to the character string.
Optionally, the setting a control value for controlling serial port switching according to the character string includes:
when the character string is detected to be a preset first character string, setting the control value to be a first preset value;
and when the character string is detected to be a preset second character string, setting the control value to be a second preset value.
Optionally, the switching the serial port data output path of the main processor according to the control value includes:
and when the control value set according to the character string is different from the control value set according to the detection result of the management processor, switching the serial port data output path of the main processor according to a preset arbitration rule.
Optionally, the switching the serial port data output path of the main processor according to the preset arbitration rule includes:
and switching the serial port data output path of the main processor according to the preemptive strategy.
Optionally, the switching the serial port data output path of the main processor according to the preemptive policy includes:
and switching the serial port data output path of the main processor according to the time sequence of setting the control value.
The present application also provides a data processing apparatus, comprising:
a service link detection unit, configured to detect whether a service link with a client is established;
and the control value setting unit is used for setting a control value for controlling the serial port switching according to the detection result.
This application still provides serial ports output path auto-change over device, includes:
the control value obtaining unit is used for obtaining a control value for controlling the switching of the serial port;
and the output path switching unit is used for switching the serial port data output path of the main processor according to the control value.
The present application further provides a switch, comprising: the system comprises a switching chip, a management processor, a programmable logic device and a main processor;
the switch chip is used for processing the forwarding of the data flow of the switch;
the management processor is used for setting a control value for controlling the switching of the serial port;
and the programmable logic device is used for switching the serial port data output path of the main processor according to the control value.
Compared with the prior art, the method has the following advantages:
the application provides a serial port output path switching system.A management processor sets a control value for controlling the switching of a serial port; and the programmable logic device switches the serial port data output path of the main processor according to the control value. The serial port output path switching system provided by the application realizes automatic switching of the output path of the serial port data of the main processor through the matching of the management processor and the programmable logic device, does not need to log in the BMC firstly and switch back the Host CPU serial port from the panel through extra operation, and improves the operation and maintenance efficiency.
Drawings
Fig. 1 is a schematic diagram of an embodiment of an application scenario provided in the present application.
Fig. 2-1 is a schematic diagram of a serial port output path switching system (service link disconnection) according to a first embodiment of the present application.
Fig. 2-2 is a schematic diagram of a serial port output path switching system (service link establishment) according to a first embodiment of the present application.
Fig. 3 is a flowchart of a serial port output path switching method according to a second embodiment of the present application.
Fig. 4 is a flowchart of a data processing method according to a third embodiment of the present application.
Fig. 5 is a flowchart of a serial port output path switching method according to a fourth embodiment of the present application.
Fig. 6 is a schematic diagram of a data processing apparatus according to a fifth embodiment of the present application.
Fig. 7 is a schematic diagram of a serial port output path switching apparatus according to a sixth embodiment of the present application.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather construed as limited to the embodiments set forth herein.
Before describing the embodiments, some technical terms used in the present application will be described.
The switch: a network device for electrical (optical) signal forwarding;
BMC, Basebard Management Controller, processor in the exchanger for managing power supply and temperature;
the Host CPU: the main processor is used for configuring and controlling the network switching chip in the switch;
CPLD: a programmable logic device can realize customized logic according to system requirements.
In order to show the present application more clearly, the application scenarios provided by the embodiments of the present application are introduced first. Fig. 1 is a schematic diagram of an embodiment of an application scenario provided in the present application. The client 1-1 firstly establishes a service link with the BMC of the switch through the out-of-band network of the BMC, and when an operation and maintenance worker is connected with the service link, the operation and maintenance worker can access serial port data of a Host CPU of the switch in an SOL mode; when the out-of-band network of the BMC has a problem, an operation and maintenance person can be connected to a panel serial port of the switch through the serial port server 1-3, and can obtain a CPU serial port by inputting a specified hot key into the panel serial port; when the operation and maintenance personnel access the serial port of the Host CPU in the SOL mode again, the operation and maintenance personnel do not need to know whether the current serial port state of the Host CPU is switched to the panel serial port or the SOL, and the IPMI SOL request is started again to obtain the serial port of the CPU.
A first embodiment of the present application provides a serial port output path switching system, which is described below with reference to fig. 2-1 and fig. 2-2.
As shown in fig. 2-1 and 2-2, the serial port output path switching system includes: a management processor 201, a programmable logic device 202, and a main processor 203.
The management processor (BMC)201 is configured to detect whether a service link with the client is established, and set a control value for controlling serial port switching according to a detection result.
The service link with the client refers to a service link between the management processor and the client. The service link may be a SOL link. SOL (Serial over LAN) and a standard IPMI (Intelligent Platform Management Interface, which is a standard applied to server Management system design) mode, and serial port data of the Host CPU is acquired through an out-of-band Management network of the BMC.
Specifically, the management processor may detect whether a service link with the client is established through a built-in link detection module, and set a control value for controlling the serial port switching according to a detection result. As shown in fig. 2-1 and fig. 2-2, 201-1 is a link detection module, which detects whether a service link with a client is established (fig. 2-2 is a diagram of service link establishment, and fig. 2-1 is a diagram of service link disconnection) through a built-in link detection module, and sets a control value for controlling serial port switching according to a detection result, where setting a control value for controlling serial port switching refers to setting a value of a serial port switching register (a register in fig. 2-1 and fig. 2-2). The management processor may set the value of the serial port switch register via the I2C bus.
Specifically, according to the detection result, a control value for controlling the serial port switching is set, including:
when the management processor detects that a service link between the management processor and a client is established, setting the control value as a first preset value; alternatively, the first and second electrodes may be,
and when the management processor detects that the service link with the client is disconnected, setting the control value as a second preset value.
In specific implementation, the first preset value may be set to 1, and the second preset value may be set to 0; or the first preset value is set to 0 and the second preset value is set to 1.
As shown in fig. 2-2, when the management processor 101 detects that a service link is established with a Client (i.e., SOL Client is active), the management processor may set the value of the serial port switch register to 1 through the I2C bus; as shown in fig. 2-1, when the management processor 101 detects that the service link with the Client is disconnected (i.e., SOL Client is not active), the management processor may set the value of the serial port switch register to 0 through the I2C bus.
The management processor is further configured to: and when the control value is a first preset value, the serial port data output to the main processor of the management processor is accessed by the client through the service link between the client and the serial port data.
If the service link between the management processor and the client is established in the SOL manner, the serial port data output to the main processor of the management processor is accessed by the client in the SOL manner through the service link between the management processor and the client.
The programmable logic device 202 is configured to switch a serial data output path of the main processor according to the control value.
The programmable logic device may include: a CPLD (Complex Programmable Logic Device), an FPGA (Field-Programmable Gate Array), etc., as shown in fig. 2-1 and 2-2, where the Programmable Logic Device 202 is a CPLD.
The programmable logic device is specifically configured to:
when the control value is a first preset value, the serial port data of the main processor is output to the management processor;
and when the control value is a second preset value, outputting the serial port data of the main processor to a panel serial port.
The programmable logic device is further to:
and when the control value is a first preset value, outputting the serial port data of the management processor to the panel serial port.
As shown in fig. 2-2, when the value of the serial port switching register is 1, the serial port data of the main processor is output to the management processor, and the serial port data of the management processor is output to the panel serial port; as shown in fig. 2-1, when the value of the serial port switching register is 0, the serial port data of the main processor is output to the panel serial port.
The above-described manner of switching the serial output path is as follows: and the management processor sets a control value for controlling the serial port switching according to the detection result. Besides the mode, the switching of the serial port output path can be realized through a hot key detection mode, namely: a hot key detection module of the programmable logic device detects a character string input to a panel serial port; and setting a control value for controlling the serial port switching according to the character string.
The programmable logic device is further to:
detecting a character string input to a serial port of a panel;
and setting a control value for controlling serial port switching according to the character string.
The programmable logic device is specifically configured to:
when the character string is detected to be a preset first character string, setting the control value to be a first preset value;
and when the character string is detected to be a preset second character string, setting the control value to be a second preset value.
For example, the preset first character string is "a", the preset second character string is "B", and when the hot key detection module of the programmable logic device detects that the character string of the serial port of the input panel is "a", the control value is set to be the first preset value; and when the hot key detection module of the programmable logic device detects that the character string of the serial port of the input panel is 'B', setting the control value as a second preset value.
The programmable logic device is specifically configured to:
and when the control value set according to the character string is different from the control value set according to the detection result of the management processor, the programmable logic device switches the serial port data output path of the main processor according to a preset arbitration rule.
Because the control value can be set by the hot key detection module according to the character string and can also be set by the management processor according to the detection result of the management processor, when the control values set by the hot key detection module and the management processor are inconsistent, the arbitration can be realized by the programmable serial port linkage control logic in the logic device. Specifically, the preset arbitration rule may be: and switching the serial port data output path of the main processor according to the preemptive strategy. And the programmable logic device switches the serial port data output path of the main processor according to the time sequence of setting the control value. For example, if the hotkey detection module of the programmable logic device sets the control value to '0' in advance, the programmable logic device outputs the serial port data of the main processor to the panel serial port; and then, when the management processor detects that a service link between the management processor and the client is established and sets the control value to be 1, the programmable logic device outputs the serial port data of the main processor to the management processor.
The control value for controlling the serial port switching is set in two modes, so that the flexibility of the operation and maintenance personnel for accessing the main processor serial port can be increased, and the operation and maintenance personnel can determine which mode to access the main processor serial port according to specific conditions.
How the system improves the operation and maintenance efficiency is described below with reference to a scene.
1. The switch operation and maintenance personnel are connected with the Host CPU serial port in a standard SOL mode, and the steps are as follows:
a) establishing network connection with the BMC of the switch through an out-of-band network of the BMC, and starting a standard IPMI SOL request to the BMC on a host of a remote network;
b) after detecting the SOL request, the BMC on the switch starts the SOL service and automatically switches the serial port of the HOST CPU to an SOL mode;
c) the operation and maintenance personnel can directly check and operate the HOST CPU serial port;
d) after the operation is finished, any recovery operation on the serial port of the CPU is not needed.
2. When the out-of-band network has a problem, the operation and maintenance personnel need to be connected to the serial port of the front panel of the switch through the serial server or directly connected to the serial port of the front panel of the switch on the site of the machine room.
In this case, the operation is performed only by the following steps:
a) the operation and maintenance personnel establish physical connection with a panel serial port (a front panel serial port in figures 2-1 and 2-2) of the switch;
b) inputting a specified hot key into the panel serial port to obtain CPU serial port data;
c) after the CPU serial port is used, the CPU serial port does not need to be restored to the SOL mode;
3. when the operation and maintenance personnel access the serial port data of the CPU in the SOL mode again, the operation and maintenance personnel do not need to know whether the current state of the serial port of the CPU is switched to the serial port of the front panel or the SOL, and can obtain the serial port of the CPU only by starting the IPMI SOL request again.
4. In a word, operation and maintenance personnel do not need to know the current state of the HOST CPU serial port, do not need to carry out special operation steps, do not need to carry out recovery processing afterwards, and can obtain the serial port data of the HOST CPU in a desired mode only by operating according to a conventional SOL mode and a hot key mode. All switching logics are automatically realized by matching the BMC and the CPLD, so that the operation and maintenance efficiency is improved.
A second embodiment of the present application provides a serial port output path switching method, which is described below with reference to fig. 3.
As shown in fig. 3, in step S301, the management processor detects whether a service link with the client is established.
The service link with the client refers to a service link between the management processor and the client. The service link may be a SOL link. SOL (Serial over LAN) and a standard IPMI (Intelligent Platform Management Interface, which is a standard applied to server Management system design) mode, and serial port data of the Host CPU is acquired through an out-of-band Management network of the BMC.
Specifically, the management processor may detect whether a service link with the client is established through a built-in link detection module. As shown in fig. 2-1 and fig. 2-2, 201-1 is a link detection module, which detects whether a service link with a client is established through a built-in link detection module (fig. 2-2 is a diagram of service link establishment, and fig. 2-1 is a diagram of service link disconnection).
As shown in fig. 3, in step S302, the management processor sets a control value for controlling serial port switching according to the result of the detection.
As shown in fig. 2-1 and 2-2, setting a control value for controlling serial port switching refers to setting a value of a serial port switching register (a register in fig. 2-1 and 2-2). The management processor may set the value of the serial port switch register via the I2C bus.
The setting of the control value for controlling the serial port switching according to the detection result comprises the following steps:
when the management processor detects that a service link between the management processor and a client is established, setting the control value as a first preset value; alternatively, the first and second electrodes may be,
and when the management processor detects that the service link with the client is disconnected, setting the control value as a second preset value.
In specific implementation, the first preset value may be set to 1, and the second preset value may be set to 0; or the first preset value is set to 0 and the second preset value is set to 1.
As shown in fig. 2-2, when the management processor 101 detects that a service link is established with a Client (i.e., SOL Client is active), the management processor may set the value of the serial port switch register to 1 through the I2C bus; as shown in fig. 2-1, when the management processor 101 detects that the service link with the Client is disconnected (i.e., SOL Client is not active), the management processor may set the value of the serial port switch register to 0 through the I2C bus.
As an implementation, the second embodiment of the present application may further include the following steps: and when the control value is a first preset value, the serial port data output to the main processor of the management processor is accessed by the client through the service link between the client and the serial port data.
If the service link between the management processor and the client is established in the SOL manner, the serial port data output to the main processor of the management processor is accessed by the client in the SOL manner through the service link between the management processor and the client.
As shown in fig. 3, in step S303, the programmable logic device switches the serial data output path of the main processor according to the control value.
The programmable logic device may include: a CPLD (Complex Programmable Logic Device), an FPGA (Field-Programmable Gate Array), etc., as shown in fig. 2-1 and 2-2, where the Programmable Logic Device 202 is a CPLD.
The programmable logic device switches the serial port data output path of the main processor according to the control value, and the method comprises the following steps:
when the control value is a first preset value, the programmable logic device outputs serial port data of the main processor to the management processor;
and when the control value is a second preset value, the programmable logic device outputs the serial port data of the main processor to a panel serial port.
As an implementation, the second embodiment of the present application may further include the following steps:
and when the control value is a first preset value, the programmable logic device outputs the serial port data of the management processor to the panel serial port.
As shown in fig. 2-2, when the value of the serial port switching register is 1, the serial port data of the main processor is output to the management processor, and the serial port data of the management processor is output to the panel serial port; as shown in fig. 2-1, when the value of the serial port switching register is 0, the serial port data of the main processor is output to the panel serial port.
As an implementation, the second embodiment of the present application may further include:
the programmable logic device detects a character string input to a panel serial port;
and setting a control value for controlling serial port switching according to the character string.
The setting of the control value for controlling the serial port switching according to the character string comprises the following steps:
when the character string is detected to be a preset first character string, setting the control value to be a first preset value;
and when the character string is detected to be a preset second character string, setting the control value to be a second preset value.
For example, the preset first character string is "a", the preset second character string is "B", and when the hot key detection module of the programmable logic device detects that the character string of the serial port of the input panel is "a", the control value is set to be the first preset value; and when the hot key detection module of the programmable logic device detects that the character string of the serial port of the input panel is 'B', setting the control value as a second preset value.
The programmable logic device switches the serial port data output path of the main processor according to the control value, and the method comprises the following steps:
and when the control value set according to the character string is different from the control value set according to the detection result of the management processor, the programmable logic device switches the serial port data output path of the main processor according to a preset arbitration rule.
The programmable logic device switches the serial port data output path of the main processor according to a preset arbitration rule, and the method comprises the following steps:
and the programmable logic device switches the serial port data output path of the main processor according to the preemptive strategy.
The programmable logic device switches the serial port data output path of the main processor according to the preemptive strategy, and the method comprises the following steps:
and the programmable logic device switches the serial port data output path of the main processor according to the time sequence of setting the control value.
Because the control value can be set by the hot key detection module according to the character string and can also be set by the management processor according to the detection result of the management processor, when the control values set by the hot key detection module and the management processor are inconsistent, the arbitration can be realized by the programmable serial port linkage control logic in the logic device. Specifically, the preset arbitration rules may include: and switching the serial port data output path of the main processor according to the preemptive strategy. And the programmable logic device switches the serial port data output path of the main processor according to the time sequence of setting the control value. For example, if the hotkey detection module of the programmable logic device sets the control value to '0' in advance, the programmable logic device outputs the serial port data of the main processor to the panel serial port; and then, when the management processor detects that a service link between the management processor and the client is established and sets the control value to be 1, the programmable logic device outputs the serial port data of the main processor to the management processor.
The control value for controlling the serial port switching is set in two modes, so that the flexibility of the operation and maintenance personnel for accessing the main processor serial port can be increased, and the operation and maintenance personnel can determine which mode to access the main processor serial port according to specific conditions.
The programmable logic device switches the serial port data output path of the main processor according to the control value, and the method comprises the following steps:
and the serial port control logic of the programmable logic device switches the serial port data output path of the main processor according to the control value.
A third embodiment of the present application provides a data processing method, in which an execution subject is a management processor. This is described below in conjunction with fig. 4.
As shown in fig. 4, in step S401, it is detected whether a service link with the client is established.
And detecting whether a service link with the client is established or not, wherein the means for detecting whether the service link with the client is established or not by the management processor.
The service link with the client refers to a service link between the management processor and the client. The service link may be a SOL link. SOL (Serial over LAN) and a standard IPMI (Intelligent Platform Management Interface, which is a standard applied to server Management system design) mode, and serial port data of the Host CPU is acquired through an out-of-band Management network of the BMC.
Specifically, the management processor may detect whether a service link with the client is established through a built-in link detection module. As shown in fig. 2-1 and fig. 2-2, 201-1 is a link detection module, which detects whether a service link with a client is established or not through a built-in link detection module (fig. 2-2 is a diagram of service link establishment, and fig. 2-1 and fig. 2-2 are diagrams of service link disconnection).
As shown in fig. 4, in step S402, a control value for controlling serial port switching is set according to the result of detection.
As shown in fig. 2-1 and 2-2, setting a control value for controlling serial port switching refers to setting a value of a serial port switching register (a register in fig. 2-1 and 2-2). The management processor may set the value of the serial port switch register via the I2C bus.
The setting of the control value for controlling the serial port switching according to the detection result comprises the following steps:
when the management processor detects that a service link between the management processor and a client is established, setting the control value as a first preset value; alternatively, the first and second electrodes may be,
and when the management processor detects that the service link with the client is disconnected, setting the control value as a second preset value.
In specific implementation, the first preset value may be set to 1, and the second preset value may be set to 0; or the first preset value is set to 0 and the second preset value is set to 1.
As shown in fig. 2-2, when the management processor 201 detects that a service link is established with a Client (i.e., SOL Client is active), the management processor may set the value of the serial port switch register to 1 through the I2C bus; as shown in fig. 2-1, when the management processor 201 detects that the service link with the Client is disconnected (i.e., SOL Client is not active), the management processor may set the value of the serial port switch register to 0 through the I2C bus.
As an implementation manner, the third embodiment of the present application may further include the following steps: and when the control value is a first preset value, the serial port data output to the main processor of the management processor is accessed by the client through the service link between the client and the serial port data.
If the service link between the management processor and the client is established in the SOL manner, the serial port data output to the main processor of the management processor is accessed by the client in the SOL manner through the service link between the management processor and the client.
A fourth embodiment of the present application provides a serial output path switching method, in which an execution main body is a programmable logic device. This is described below in conjunction with fig. 5.
As shown in fig. 5, in step S501, a control value for controlling serial port switching is obtained.
As shown in fig. 5, in step S502, the serial port data output path of the main processor is switched according to the control value.
The switching the serial port data output path of the main processor according to the control value comprises:
when the control value is a first preset value, the serial port data of the main processor is output to the management processor;
and when the control value is a second preset value, outputting the serial port data of the main processor to a panel serial port.
As an implementation manner, the fourth embodiment of the present application may further include the following steps:
and when the control value is a first preset value, outputting the serial port data of the management processor to the panel serial port.
As shown in fig. 2-2, when the value of the serial port switching register is 1, the serial port data of the main processor is output to the management processor, and the serial port data of the management processor is output to the panel serial port; as shown in fig. 2-1, when the value of the serial port switching register is 0, the serial port data of the main processor is output to the panel serial port.
As an implementation, the second embodiment of the present application may further include:
the programmable logic device detects a character string input to a panel serial port;
and setting a control value for controlling serial port switching according to the character string.
The setting of the control value for controlling the serial port switching according to the character string comprises the following steps:
when the character string is detected to be a preset first character string, setting the control value to be a first preset value;
and when the character string is detected to be a preset second character string, setting the control value to be a second preset value.
For example, the preset first character string is "a", the preset second character string is "B", and when the hot key detection module of the programmable logic device detects that the character string of the serial port of the input panel is "a", the control value is set to be the first preset value; and when the hot key detection module of the programmable logic device detects that the character string of the serial port of the input panel is 'B', setting the control value as a second preset value.
The switching the serial port data output path of the main processor according to the control value comprises:
and when the control value set according to the character string is different from the control value set according to the detection result of the management processor, switching the serial port data output path of the main processor according to a preset arbitration rule.
The switching the serial port data output path of the main processor according to the preset arbitration rule comprises the following steps:
and switching the serial port data output path of the main processor according to the preemptive strategy.
The switching the serial port data output path of the main processor according to the preemptive strategy comprises the following steps:
and switching the serial port data output path of the main processor according to the time sequence of setting the control value.
Because the control value can be set by the hot key detection module according to the character string and can also be set by the management processor according to the detection result of the management processor, when the control values set by the hot key detection module and the management processor are inconsistent, the arbitration can be realized by the programmable serial port linkage control logic in the logic device. Specifically, the preset arbitration rules may include: and switching the serial port data output path of the main processor according to the preemptive strategy. And the programmable logic device switches the serial port data output path of the main processor according to the time sequence of setting the control value. For example, if the hotkey detection module of the programmable logic device sets the control value to '0' in advance, the programmable logic device outputs the serial port data of the main processor to the panel serial port; and then, when the management processor detects that a service link between the management processor and the client is established and sets the control value to be 1, the programmable logic device outputs the serial port data of the main processor to the management processor.
The control value for controlling the serial port switching is set in two modes, so that the flexibility of the operation and maintenance personnel for accessing the main processor serial port can be increased, and the operation and maintenance personnel can determine which mode to access the main processor serial port according to specific conditions.
The switching the serial port data output path of the main processor according to the control value comprises:
and the serial port control logic of the programmable logic device switches the serial port data output path of the main processor according to the control value.
Corresponding to the data processing method provided in the third embodiment of the present application, a fifth embodiment of the present application also provides a data processing apparatus.
As shown in fig. 6, the data processing apparatus includes:
a service link detection unit 601, configured to detect whether a service link with a client is established;
a control value setting unit 602, configured to set a control value for controlling serial port switching according to a detection result.
Optionally, the control value setting unit is specifically configured to:
when the establishment of a service link with a client is detected, setting the control value as a first preset value; alternatively, the first and second electrodes may be,
and when the disconnection of the service link with the client is detected, setting the control value as a second preset value.
Optionally, the apparatus is further configured to:
and when the control value is a first preset value, the serial port data output to the main processor of the management processor is accessed by the client through the service link between the client and the serial port data.
It should be noted that, for the detailed description of the data processing apparatus provided in the fifth embodiment of the present application, reference may be made to the related description of the third embodiment of the present application, and details are not repeated here.
Corresponding to the method for switching the serial output path provided in the fourth embodiment of the present application, a sixth embodiment of the present application further provides a device for switching the serial output path.
As shown in fig. 7, the serial port output path switching apparatus includes:
a control value obtaining unit 701 configured to obtain a control value for controlling serial port switching;
and an output path switching unit 702, configured to switch a serial data output path of the main processor according to the control value.
Optionally, the output path switching unit is specifically configured to:
when the control value is a first preset value, the serial port data of the main processor is output to the management processor;
and when the control value is a second preset value, outputting the serial port data of the main processor to a panel serial port.
Optionally, the apparatus further comprises:
and the serial port data output unit of the management processor is used for outputting the serial port data of the management processor to the panel serial port when the control value is a first preset value.
Optionally, the apparatus further comprises:
a character string detection test for detecting a character string input to a serial port of a panel;
and the control value setting unit is used for setting a control value for controlling the serial port switching according to the character string.
Optionally, the control value setting unit is specifically configured to:
when the character string is detected to be a preset first character string, setting the control value to be a first preset value;
and when the character string is detected to be a preset second character string, setting the control value to be a second preset value.
Optionally, the output path switching unit is specifically configured to:
and when the control value set according to the character string is different from the control value set according to the detection result of the management processor, switching the serial port data output path of the main processor according to a preset arbitration rule.
Optionally, the output path switching unit is specifically configured to:
and switching the serial port data output path of the main processor according to the preemptive strategy.
Optionally, the output path switching unit is specifically configured to:
and switching the serial port data output path of the main processor according to the time sequence of setting the control value.
It should be noted that, for the detailed description of the serial port output path switching device provided in the sixth embodiment of the present application, reference may be made to the related description of the fourth embodiment of the present application, and details are not described here again.
A seventh embodiment of the present application provides an electronic device including the system of the first embodiment of the present application.
An eighth embodiment of the present application provides a switch, including: the system comprises a switching chip, a management processor, a programmable logic device and a main processor;
the switch chip is used for processing the forwarding of the data flow of the switch;
the management processor is used for setting a control value for controlling the switching of the serial port;
and the programmable logic device is used for switching the serial port data output path of the main processor according to the control value.
The switch provided by the eighth embodiment of the present application uses a three-plane separation concept to improve the reliability and availability of the system, that is, the data plane, the control plane and the management plane are separated and do not affect each other. The exchange chip processes the data flow transmission of the whole exchanger, the Host CPU controls and configures the exchange chip, and introduces a BMC (Baseboard Management Controller), a processor for managing power supply, temperature and abnormity monitoring in the exchanger to manage the system power supply and the fan and monitor the abnormity. The Host CPU and the BMC are used as two independent processors and are respectively provided with respective serial ports. In order to save the space of the panel and unify the access interfaces, the switch only provides one physical serial port to the outside on the panel. The operation and maintenance personnel need to access the serial port of the Host CPU and the serial port of the BMC through the physical serial port.
In the switch provided in the eighth embodiment of the present application, a control value for controlling serial port switching is set by a management processor; and the programmable logic device switches the serial port data output path of the main processor according to the control value. According to the eighth embodiment of the application, through the matching of the management processor and the programmable logic device, the automatic switching of the output path of the serial port data of the main processor is realized, the BMC does not need to be logged in first, and the Host CPU serial port is switched back from the panel through extra operation, so that the operation and maintenance efficiency is improved.
Although the present application has been described with reference to the preferred embodiments, it is not intended to limit the present application, and those skilled in the art can make variations and modifications without departing from the spirit and scope of the present application, therefore, the scope of the present application should be determined by the claims that follow.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, 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 technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include non-transitory computer readable media (transient media), such as modulated data signals and carrier waves.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Claims (30)
1. A serial port output path switching system is characterized by comprising: a management processor, a programmable logic device and a main processor;
the management processor is used for setting a control value for controlling the switching of the serial port;
and the programmable logic device is used for switching the serial port data output path of the main processor according to the control value.
2. The system of claim 1, wherein the management processor is specifically configured to:
when the management processor detects that a service link between the management processor and a client is established, setting the control value as a first preset value; alternatively, the first and second electrodes may be,
and when the management processor detects that a service link with the client is established, setting the control value as a second preset value.
3. The system of claim 2, wherein the programmable logic device is specifically configured to:
when the control value is a first preset value, the serial port data of the main processor is output to the management processor;
and when the control value is a second preset value, outputting the serial port data of the main processor to a panel serial port.
4. The system of claim 3, wherein the management processor is further configured to:
and when the control value is a first preset value, the serial port data output to the main processor of the management processor is accessed by the client through the service link between the client and the serial port data.
5. The system of claim 3, wherein the programmable logic device is further configured to:
and when the control value is a first preset value, outputting the serial port data of the management processor to the panel serial port.
6. The system of claim 1, wherein the programmable logic device is further configured to:
detecting a character string input to a serial port of a panel;
and setting a control value for controlling serial port switching according to the character string.
7. The system of claim 6, wherein the programmable logic device is specifically configured to:
when the character string is detected to be a preset first character string, setting the control value to be a first preset value;
and when the character string is detected to be a preset second character string, setting the control value to be a second preset value.
8. The system of claim 7, wherein the programmable logic device is specifically configured to:
and when the control value set according to the character string is different from the control value set according to the detection result of the management processor, the programmable logic device switches the serial port data output path of the main processor according to a preset arbitration rule.
9. The system of claim 8, wherein the programmable logic device is specifically configured to:
and switching the serial port data output path of the main processor according to the preemptive strategy.
10. The system of claim 9, wherein the programmable logic device is specifically configured to:
and the programmable logic device switches the serial port data output path of the main processor according to the time sequence of setting the control value.
11. A serial port output path switching method is characterized by comprising the following steps:
the management processor sets a control value for controlling the switching of the serial port;
and the programmable logic device switches the serial port data output path of the main processor according to the control value.
12. The method of claim 11, wherein the management processor sets a control value for controlling serial port switching, comprising:
when the management processor detects that a service link between the management processor and a client is established, the management processor sets the control value to be a first preset value; alternatively, the first and second electrodes may be,
and when the management processor detects that a service link with a client is disconnected, the management processor sets the control value to be a second preset value.
13. The method of claim 12, wherein the programmable logic device switches a serial data output path of the host processor according to the control value, and the method comprises:
when the control value is a first preset value, the programmable logic device outputs serial port data of the main processor to the management processor;
and when the control value is a second preset value, the programmable logic device outputs the serial port data of the main processor to a panel serial port.
14. The method of claim 13, further comprising:
and when the control value is a first preset value, the serial port data output to the main processor of the management processor is accessed by the client through the service link between the client and the serial port data.
15. The method of claim 13, further comprising:
and when the control value is a first preset value, the programmable logic device outputs the serial port data of the management processor to the panel serial port.
16. The method of any one of claims 12-15, further comprising:
the programmable logic device detects a character string input to a panel serial port;
and setting a control value for controlling serial port switching according to the character string.
17. The method according to claim 16, wherein the setting a control value for controlling serial port switching according to the character string comprises:
when the character string is detected to be a preset first character string, setting the control value to be a first preset value;
and when the character string is detected to be a preset second character string, setting the control value to be a second preset value.
18. The method of claim 17, wherein the programmable logic device switches a serial data output path of the host processor according to the control value, and the method comprises:
and when the control value set according to the character string is different from the control value set according to the detection result of the management processor, the programmable logic device switches the serial port data output path of the main processor according to a preset arbitration rule.
19. The method of claim 18, wherein the programmable logic device switches the serial port data output path of the host processor according to a preset arbitration rule, comprising:
and the programmable logic device switches the serial port data output path of the main processor according to the preemptive strategy.
20. A data processing method, comprising:
detecting whether a service link with a client is established;
and setting a control value for controlling the serial port switching according to the detection result.
21. The method according to claim 20, wherein the setting a control value for controlling serial port switching according to the detection result comprises:
when the establishment of a service link with a client is detected, setting the control value as a first preset value; alternatively, the first and second electrodes may be,
and when the disconnection of the service link with the client is detected, setting the control value as a second preset value.
22. The method of claim 21, further comprising:
and when the control value is a first preset value, the serial port data output to the main processor of the management processor is accessed by the client through the service link between the client and the serial port data.
23. A serial port output path switching method is characterized by comprising the following steps:
obtaining a control value for controlling serial port switching;
and switching the serial port data output path of the main processor according to the control value.
24. The method according to claim 23, wherein switching the serial port data output path of the main processor according to the control value comprises:
when the control value is a first preset value, the serial port data of the main processor is output to the management processor;
and when the control value is a second preset value, outputting the serial port data of the main processor to a panel serial port.
25. The method of claim 24, further comprising:
and when the control value is a first preset value, outputting the serial port data of the management processor to the panel serial port.
26. The method of any one of claims 23-25, further comprising:
detecting a character string input to a serial port of a panel;
and setting a control value for controlling serial port switching according to the character string.
27. The method according to claim 26, wherein the setting a control value for controlling serial port switching according to the character string comprises:
when the character string is detected to be a preset first character string, setting the control value to be a first preset value;
and when the character string is detected to be a preset second character string, setting the control value to be a second preset value.
28. A data processing apparatus, comprising:
a service link detection unit, configured to detect whether a service link with a client is established;
and the control value setting unit is used for setting a control value for controlling the serial port switching according to the detection result.
29. A serial port output path switching device is characterized by comprising:
the control value obtaining unit is used for obtaining a control value for controlling the switching of the serial port;
and the output path switching unit is used for switching the serial port data output path of the main processor according to the control value.
30. A switch, comprising: the system comprises a switching chip, a management processor, a programmable logic device and a main processor;
the switch chip is used for processing the forwarding of the data flow of the switch;
the management processor is used for setting a control value for controlling the switching of the serial port;
and the programmable logic device is used for switching the serial port data output path of the main processor according to the control value.
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| CN201910456493.2A CN112015689A (en) | 2019-05-29 | 2019-05-29 | Serial port output path switching method, system and device and switch |
| PCT/CN2020/091522 WO2020238747A1 (en) | 2019-05-29 | 2020-05-21 | Serial port output path switching method, system and apparatus, and switch |
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