LPC interrupt routing method and system on Feiteng platform, medium and product

Abstract

The invention discloses an LPC interrupt routing method and system on a Feiteng platform, a medium and a product. The response of an LPC interrupt processing function to an LPC interrupt in the method comprises the following steps: reading an LPC interrupt state register to obtain an LPC interrupt state; clearing the LPC interrupt; obtaining a corresponding serial interrupt number according to the LPC interrupt state; combining the serial interrupt number corresponding to the LPC interrupt state with an LPC interrupt mapping table to find a Linux interrupt number corresponding to the serial equipment initiating the LPC interrupt; and according to the Linux interrupt number corresponding to the serial device initiating the LPC interrupt, calling an interrupt processing function corresponding to the serial device initiating the LPC interrupt to process the LPC interrupt. The invention aims to solve the problems that the LPC interruption cannot be routed to the corresponding serial equipment under the Feiteng platform, the system resource waste is caused, even the interruption disorder of the LPC is possibly caused, and the system stability and the user experience are influenced.

Description

Technical Field

[0001] The present invention relates to interrupt technology in the field of computer systems, and in particular to an LPC interrupt routing method, system, medium and product on a Feiteng platform. Background Art

[0002] With the development of computer systems, system stability and ease of use have become increasingly important. LPC (Low PinCount) is a peripheral interface with a low IO count. LPC can provide up to 32 serial interrupts, that is, it can support 32 serial interrupt devices. Among them, serial interrupt refers to a method of transmitting an interrupt request signal through a signal line. All devices that support serial interrupts can send their own interrupt request signals through this signal line.

[0003] On the current Feiteng platform, LPC only applies for one interrupt number to the system, and all LPC interrupt devices can only register an interrupt handling function on an interrupt line through this interrupt number. When an LPC interrupt occurs on a device, it is necessary to poll each interrupt handling function on the interrupt line to find the corresponding interrupt device, which greatly increases the resources required for such interrupts in the system. When multiple devices generate interrupts, it will not only waste system resources, but also cause read and write errors due to high-frequency read and write operations on the same LPC register by multiple parties in a short period of time, which may lead to interrupt disorder in LPC. At the same time, since multiple serial devices share the same interrupt, when a serial device has a problem, it is impossible to find the specific abnormal problem through an interrupt number. Based on the above problems, the current solution seriously affects the stability of the system, the efficiency of fault handling and the user experience. Therefore, how to correctly distribute it to the corresponding serial device according to the interrupt status when an LPC interrupt occurs on the device is an urgent problem to be solved.

[0004] The Chinese patent application with publication number CN118394688A discloses a method for responding to LPC peripheral serial interrupts based on a GPIO interface. The method implements encoding the interrupt signal into the LPC interrupt status register, and sends it to the serial interrupt line to complete the interrupt signal reporting. However, the method focuses on the reporting of the LPC interrupt, and does not implement a method for routing the LPC interrupt to a serial device. Currently, when an LPC interrupt occurs in a device on the Feiteng platform, the interrupt is not distributed to the corresponding serial device according to the serial interrupt status of the LPC, but the interrupt processing flow of all serial devices is called at the same time. When there are many devices, it will not only waste resources, but may even cause interrupt disorder in the LPC, and abnormal problems in the processing of devices that really need the interrupt. This problem will cause a waste of system resources, affect system stability, increase the difficulty of fault debugging and processing, and affect the user experience. Summary of the invention

[0005] Technical problem to be solved by the present invention: In view of the above-mentioned problems in the prior art, a method, system, medium and product for LPC interrupt routing on a Feiteng platform are provided. The present invention aims to solve the problem that when an LPC interrupt occurs in a serial device, it cannot be routed to the corresponding serial device, causing waste of system resources and even causing LPC interrupt disorder, thereby affecting system stability and user experience.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A LPC interrupt routing method on a Feiteng platform, after a serial device has an LPC interrupt, the LPC interrupt processing function applied for the LPC interrupt responds to the LPC interrupt including: Read the LPC interrupt status register to obtain the LPC interrupt status; Clear LPC interrupt; Get the corresponding serial interrupt number according to the LPC interrupt status; Combine the serial interrupt number corresponding to the LPC interrupt status with the LPC interrupt mapping table to find the Linux interrupt number corresponding to the serial device that initiated the LPC interrupt; According to the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt, the interrupt processing function corresponding to the serial device that initiates the LPC interrupt is called to handle this LPC interrupt.

[0007] Optionally, before an LPC interrupt occurs in a serial device, applying for registration of an LPC interrupt for the serial device: Get the serial interrupt number of the serial device; Find the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt according to the serial interrupt number of the serial device combined with the LPC interrupt mapping table; Use the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt to apply for a corresponding interrupt processing function for the serial device to handle the LPC interrupt initiated by the serial device.

[0008] Optionally, before applying for registration of LPC interrupt for the serial device, the step further includes LPC registration and creation of an LPC interrupt mapping table: Get the interrupt of LPC device; Get the serial interrupt number sirq_num supported by LPC; Apply to create an LPC interrupt domain according to the serial interrupt number sirq_num; Apply for LPC interrupt processing function for LPC interrupt; Map each serial interrupt number on the LPC interrupt domain to a Linux interrupt, create an LPC interrupt mapping table and record a Linux interrupt number to which each serial interrupt number is uniquely mapped.

[0009] Optionally, the acquiring the serial interrupt number sirq_num supported by the LPC refers to obtaining the serial interrupt number sirq_num supported by the LPC from a serial interrupt configuration register of the LPC.

[0010] Optionally, when creating the LPC interrupt mapping table and using the LPC interrupt mapping table to record a Linux interrupt to which each serial interrupt number is uniquely mapped, each entry in the LPC interrupt mapping table includes a serial interrupt number and its corresponding Linux interrupt number.

[0011] In addition, the present invention also provides an LPC interrupt routing system on the Feiteng platform, including an LPC interrupt processing function applied for an LPC interrupt after an LPC interrupt occurs in a serial device: The status reading program unit is used to read the LPC interrupt status register to obtain the LPC interrupt status; Interrupt clearer unit, used to clear LPC interrupt; The serial interrupt number reading program unit is used to obtain the corresponding serial interrupt number according to the LPC interrupt state; A Linux interrupt number search program unit is used to find the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt by combining the serial interrupt number corresponding to the LPC interrupt state with the LPC interrupt mapping table; The interrupt calling program unit is used to call the interrupt processing function corresponding to the serial device that initiates the LPC interrupt according to the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt to handle the current LPC interrupt.

[0012] Optionally, a registration function for applying for registration of LPC interruption for a serial device is also included, and the registration function includes: A serial interrupt number extraction program unit is used to obtain the serial interrupt number of a serial device; A Linux interrupt number query program unit is used to find the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt according to the serial interrupt number of the serial device and the LPC interrupt mapping table; The interrupt processing function application registration program unit is used to use the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt to apply for a corresponding interrupt processing function for the serial device to process the LPC interrupt initiated by the serial device.

[0013] In addition, the present invention also provides an LPC interrupt routing system on a Feiteng platform, comprising a microprocessor and a memory connected to each other, wherein the microprocessor is programmed or configured to execute the LPC interrupt routing method on the Feiteng platform.

[0014] In addition, the present invention also provides a computer-readable storage medium, in which a computer program or instruction is stored. The computer program or instruction is programmed or configured to execute the LPC interrupt routing method on the Feiteng platform through a processor.

[0015] In addition, the present invention also provides a computer program product, including a computer program or instructions, which are programmed or configured to execute the LPC interrupt routing method on the Feiteng platform through a processor.

[0016] Compared with the prior art, the present invention mainly has the following advantages: the present invention includes that after a serial device has an LPC interrupt, the LPC interrupt processing function applied for the LPC interrupt responds to the LPC interrupt including: reading the LPC interrupt status register to obtain the LPC interrupt status; clearing the LPC interrupt; obtaining the corresponding serial interrupt number according to the LPC interrupt status; combining the serial interrupt number corresponding to the LPC interrupt status with the LPC interrupt mapping table to find the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt; calling the interrupt processing function corresponding to the serial device that initiates the LPC interrupt to process the LPC interrupt according to the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt. The present invention realizes routing and distributing the LPC serial interrupt to the corresponding serial device through the above steps. When the device has an LPC interrupt, the LPC queries the interrupt status, and routes the interrupt to the corresponding serial device according to the set serial interrupt bit, thereby solving the problem that the device cannot be routed to the corresponding serial device after the LPC interrupt occurs, causing waste of system resources, and even causing disorder in the LPC interrupt, reducing conflicts when multiple serial devices use the LPC interrupt, reducing waste of system resources, and ensuring system stability and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the basic flow of the method of the embodiment of the present invention.

[0018] Figure 2 The figure is a flow chart of applying for registration of LPC interrupt for a serial device in an embodiment of the present invention.

[0019] Figure 3 The present invention is a flowchart of LPC registration and initialization to create an LPC interrupt mapping table.

[0020] Figure 4 The figure is a schematic diagram of the overall implementation process of the method according to the embodiment of the present invention. DETAILED DESCRIPTION

[0021] like Figure 1 As shown, the LPC interrupt routing method on the Feiteng platform of this embodiment includes a serial device ( Figure 1After an LPC interrupt occurs, the LPC interrupt processing function applied for the LPC interrupt responds to the LPC interrupt including: Read the LPC interrupt status register to obtain the LPC interrupt status; Clear LPC interrupt; Get the corresponding serial interrupt number according to the LPC interrupt status; Combine the serial interrupt number corresponding to the LPC interrupt status with the LPC interrupt mapping table to find the Linux interrupt number corresponding to the serial device that initiated the LPC interrupt; Call the interrupt handling function corresponding to the serial device that initiates the LPC interrupt according to the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt ( Figure 1 In the figure, it is represented as the device n interrupt processing function) to handle this LPC interrupt.

[0022] like Figure 2 As shown, this embodiment also includes applying for registration of LPC interrupt for the serial device before the LPC interrupt occurs in the serial device: S201, obtain the serial interrupt number of the serial device, such as Figure 2 As shown, in this embodiment, a total of n serial devices (device 1 to device n) need to be registered, and the obtained serial interrupt numbers are respectively the serial interrupt number of device 1 to the serial interrupt number of device n. It should be noted that the number of serial devices n registered here should be less than or equal to the number of serial interrupts sirq_num supported by LPC; S202, finding the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt according to the serial interrupt number of the serial device and the LPC interrupt mapping table; S203, using the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt to apply for a corresponding interrupt processing function for the serial device to process the LPC interrupt initiated by the serial device, such as Figure 2 As shown, devices 1 to device n apply for corresponding interrupt processing functions, which are device 1 interrupt processing function to device n interrupt processing function respectively.

[0023] like Figure 3 As shown, this embodiment also includes LPC registration and initialization to create an LPC interrupt mapping table before the serial device applies for registration of LPC interrupt: Get the interrupt (irq) of the LPC device; Get the serial interrupt number sirq_num supported by LPC; Apply to create an LPC interrupt domain according to the supported serial interrupt number sirq_num; Apply for LPC interrupt processing function for LPC interrupt; Map each serial interrupt number on the LPC interrupt domain to a Linux interrupt, create an LPC interrupt mapping table and record a Linux interrupt number to which each serial interrupt number is uniquely mapped.

[0024] As an optional implementation manner, in this embodiment, obtaining the serial interrupt number sirq_num supported by the LPC refers to obtaining the serial interrupt number sirq_num supported by the LPC from a serial interrupt configuration register of the LPC.

[0025] As an optional implementation, in this embodiment, an LPC interrupt mapping table is created and used to record a Linux interrupt to which each serial interrupt number is uniquely mapped, and each entry in the LPC interrupt mapping table includes a serial interrupt number and its corresponding Linux interrupt number.

[0026] like Figure 4 As shown, the overall implementation process of the method of this embodiment includes: S001, obtaining the resources of the LPC device, including its interrupt number; S002, obtaining the number of serial interrupts supported by the LPC from the serial interrupt configuration register of the LPC, and using the variable sirq_num to represent it; S003, applying to create an LPC interrupt domain according to the number of supported serial interrupts sirq_num; S004, applying for an LPC interrupt processing function for the LPC interrupt; S005, mapping each serial interrupt number on the LPC interrupt domain to a Linux interrupt, and generating an LPC interrupt mapping table, each serial interrupt number uniquely corresponds to a Linux interrupt; S006, when a serial device driver applies to register an LPC interrupt, the corresponding Linux interrupt is found through the LPC serial interrupt number assigned to the device and the interrupt mapping table on the LPC interrupt domain, and then the Linux interrupt is used to apply for a corresponding interrupt processing function for the device. When the serial device driver is registered, the corresponding Linux interrupt is found according to the LPC serial interrupt number assigned to it and the interrupt mapping table on the LPC interrupt domain generated in step S005; the found Linux interrupt is used to apply for an interrupt processing function for the serial device; S007, when a serial device has an LPC interrupt, the interrupt flow enters the LPC interrupt processing function. The LPC interrupt status register is read to obtain the LPC interrupt status. Each bit of the LPC interrupt status corresponds to the LPC serial interrupt number, indicating which serial interrupts caused this LPC interrupt. After clearing the LPC interrupt, the corresponding Linux interrupt is found according to the serial interrupt number of the interrupt status flag combined with the LPC interrupt mapping table, and the interrupt processing function corresponding to the Linux interrupt is called to handle this LPC interrupt.

[0027] To sum up, the LPC interrupt routing method on the Feiteng platform of this embodiment realizes the LPC interrupt routing function on the Feiteng platform through the above steps to route and distribute the LPC serial interrupt to the corresponding serial device. When an LPC interrupt occurs in the device, the LPC queries the interrupt status and routes the interrupt to the corresponding serial device according to the set serial interrupt bit, thereby solving the problem that when an LPC interrupt occurs in the device, it cannot be routed to the corresponding serial device, causing waste of system resources and even causing interrupt disorder in the LPC. It reduces the conflict when multiple serial devices use LPC interrupts, reduces the waste of system resources, ensures system stability and user experience, and also improves debugging efficiency.

[0028] In addition, corresponding to the LPC interrupt routing method on the Feiteng platform of this embodiment, this embodiment also provides an LPC interrupt routing system on the Feiteng platform, including that after a serial device has an LPC interrupt, an LPC interrupt processing function applied for the LPC interrupt includes: The status reading program unit is used to read the LPC interrupt status register to obtain the LPC interrupt status; Interrupt clearer unit, used to clear LPC interrupt; The serial interrupt number reading program unit is used to obtain the corresponding serial interrupt number according to the LPC interrupt state; A Linux interrupt number search program unit is used to find the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt by combining the serial interrupt number corresponding to the LPC interrupt state with the LPC interrupt mapping table; The interrupt calling program unit is used to call the interrupt processing function corresponding to the serial device that initiates the LPC interrupt according to the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt to handle the current LPC interrupt.

[0029] The LPC interrupt routing system on the Feiteng platform in this embodiment also includes a registration function for applying for registration of LPC interrupt for the serial device, and the registration function includes: A serial interrupt number extraction program unit is used to obtain the serial interrupt number of a serial device; A Linux interrupt number query program unit is used to find the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt according to the serial interrupt number of the serial device and the LPC interrupt mapping table; The interrupt processing function application registration program unit is used to use the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt to apply for a corresponding interrupt processing function for the serial device to process the LPC interrupt initiated by the serial device.

[0030] The LPC interrupt routing system on the Feiteng platform of this embodiment also realizes the routing and distribution of LPC serial interrupts to corresponding serial devices through the above-mentioned program unit. When an LPC interrupt occurs in the device, the LPC queries the interrupt status and routes the interrupt to the corresponding serial device according to the set serial interrupt bit. This can solve the problem that when an LPC interrupt occurs in the device, it cannot be routed to the corresponding serial device, causing waste of system resources and even causing interrupt disorder in the LPC. It can reduce conflicts when multiple serial devices use LPC interrupts, reduce waste of system resources, and ensure system stability and user experience.

[0031] This embodiment also provides an LPC interrupt routing system on the Feiteng platform, including a microprocessor and a memory connected to each other, wherein the microprocessor is programmed or configured to execute the LPC interrupt routing method on the Feiteng platform.

[0032] This embodiment also provides a computer-readable storage medium, in which a computer program or instruction is stored. The computer program or instruction is programmed or configured to execute the LPC interrupt routing method on the Feiteng platform through a processor.

[0033] This embodiment also provides a computer program product, including a computer program or instructions, which are programmed or configured to execute the LPC interrupt routing method on the Feiteng platform through a processor.

[0034] Those skilled in the art should understand that the technical solutions provided by the embodiments of the present application may be in the form of methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes. The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the process Figure 1 A process or multiple processes and / or boxes Figure 1These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific way, so that the instructions stored in the computer-readable memory produce a product including an instruction device, which implements the functions specified in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide for implementing the process in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0035] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A LPC interrupt routing method on a Feiteng platform, characterized in that: After a serial device has an LPC interrupt, the LPC interrupt processing function applied for the LPC interrupt responds to the LPC interrupt including: Read the LPC interrupt status register to obtain the LPC interrupt status; Clear LPC interrupt; Get the corresponding serial interrupt number according to the LPC interrupt status; Combine the serial interrupt number corresponding to the LPC interrupt status with the LPC interrupt mapping table to find the Linux interrupt number corresponding to the serial device that initiated the LPC interrupt; According to the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt, the interrupt processing function corresponding to the serial device that initiates the LPC interrupt is called to handle this LPC interrupt.

2. The LPC interrupt routing method on the Feiteng platform according to claim 1, characterized in that: It also includes applying for registration of LPC interrupt for the serial device before an LPC interrupt occurs in the serial device: Get the serial interrupt number of the serial device; According to the serial interrupt number of the serial device and the LPC interrupt mapping table, find the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt; Use the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt to apply for a corresponding interrupt processing function for the serial device to handle the LPC interrupt initiated by the serial device.

3. The LPC interrupt routing method on the Feiteng platform according to claim 2, characterized in that: The application for registering LPC interrupt for serial device also includes LPC registration and creating LPC interrupt mapping table: Get the interrupt of LPC device; Get the serial interrupt number sirq_num supported by LPC; Apply to create an LPC interrupt domain according to the serial interrupt number sirq_num; Apply for LPC interrupt processing function for LPC interrupt; Map each serial interrupt number on the LPC interrupt domain to a Linux interrupt, create an LPC interrupt mapping table and record the Linux interrupt number to which each serial interrupt number is uniquely mapped.

4. The LPC interrupt routing method on the Feiteng platform according to claim 3, characterized in that: The obtaining of the serial interrupt number sirq_num supported by the LPC refers to obtaining the serial interrupt number sirq_num supported by the LPC from a serial interrupt configuration register of the LPC.

5. The LPC interrupt routing method on the Feiteng platform according to claim 3, characterized in that: When the LPC interrupt mapping table is created and the LPC interrupt mapping table is used to record a Linux interrupt to which each serial interrupt number is uniquely mapped, each table entry in the LPC interrupt mapping table includes a serial interrupt number and its corresponding Linux interrupt number.

6. An LPC interrupt routing system on a Feiteng platform, characterized in that: After a serial device has an LPC interrupt, the LPC interrupt processing function requested for the LPC interrupt includes: The status reading program unit is used to read the LPC interrupt status register to obtain the LPC interrupt status; Interrupt clearer unit, used to clear LPC interrupt; The serial interrupt number reading program unit is used to obtain the corresponding serial interrupt number according to the LPC interrupt state; A Linux interrupt number search program unit is used to find the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt by combining the serial interrupt number corresponding to the LPC interrupt state with the LPC interrupt mapping table; The interrupt calling program unit is used to call the interrupt processing function corresponding to the serial device that initiates the LPC interrupt according to the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt to handle the current LPC interrupt.

7. The LPC interrupt routing system on the Feiteng platform according to claim 6, characterized in that: It also includes a registration function for applying for registration of LPC interrupt for the serial device, and the registration function includes: A serial interrupt number extraction program unit is used to obtain the serial interrupt number of a serial device; A Linux interrupt number query program unit is used to find the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt according to the serial interrupt number of the serial device combined with the LPC interrupt mapping table; The interrupt processing function application registration program unit is used to use the Linux interrupt number corresponding to the serial device that initiates the LPC interrupt to apply for a corresponding interrupt processing function for the serial device to process the LPC interrupt initiated by the serial device.

8. An LPC interrupt routing system on a Feiteng platform, comprising a microprocessor and a memory connected to each other, characterized in that: The microprocessor is programmed or configured to execute the LPC interrupt routing method on the Feiteng platform as described in any one of claims 1 to 5.

9. A computer-readable storage medium having a computer program or instruction stored therein, characterized in that: The computer program or instruction is programmed or configured to execute the LPC interrupt routing method on the Feiteng platform as described in any one of claims 1 to 5 through a processor.

10. A computer program product comprising a computer program or instructions, characterized in that The computer program or instruction is programmed or configured to execute the LPC interrupt routing method on the Feiteng platform as described in any one of claims 1 to 5 through a processor.

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