Equipment driving method for user mode and kernel mode driver cooperative processing framework

Abstract

The invention discloses an equipment driving method for a user mode and kernel mode-driver cooperative processing framework and the method comprises the steps: initializing the user mode and kernel mode driver cooperative processing framework, comprising a kernel mode driver as a loadable kernel module to operate in a kernel space used for providing a stable kernel mode driver development interface; and a user mode driver as a shared library, is located in the user space and used for providing an interface for user mode driver development; and when an application program in the user space calls the user mode driver, enabling the user mode driver to interact with the kernel mode driver by the user mode driver, or directly interact with the kernel mode driver by character equipment and DMA buffer equipment so that operation on specified equipment is completed. User mode and kernel mode driver cooperative processing can be achieved, interaction with hardware is jointly completed, the driver development and maintenance process can be greatly simplified, and the stability and reliability of the kernel are improved.

Description

technical field [0001] The invention relates to the field of computer operating systems, in particular to a device driving method based on a user mode and a kernel mode driver cooperative processing framework under a Linux system. Background technique [0002] With the development of computer technology, Linux is no longer limited to the application of servers and terminal systems, and is gradually widely used on mobile devices. However, the problem of peripherals has always been an important factor affecting the development of Linux systems. The main reason is that the development of drivers under Linux is complicated, and it is required to comply with the GPL agreement to disclose the source code, resulting in insufficient motivation for some device manufacturers in driver development. Nowadays, the proportion of device driver code in the kernel is increasing, especially the drivers ported and developed by enterprises themselves. When these drivers have problems, such as i...

AI Technical Summary

Problems solved by technology

However, the problem of peripherals has always been an important factor affecting the development of Linux systems. The main reason is that the development of drivers under Linux is complicated, and it is required to comply with the GPL agreement to disclose the source code, resulting in insufficient motivation for some device manufacturers in driver development.

Implementations such as this inevitably have the problem of performance degradation, so they have not been able to be applied on a large scale

And like UIO in Linux, it does not support direct memory access (Direct Memory Access, DMA) in user space, which limits its application on devices that require DMA support

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