Method and device for realizing multifunction simulation of single-function PCI (Peripheral Component Interconnect) devices

Abstract

The invention provides a method and device for realizing multifunction simulation of single-function PCI (Peripheral Component Interconnect) devices. The method comprises the following steps of: confirming the quantity of the single-function PCI devices to be simulated into multifunction devices by utilizing a PCI device driver according to a preset parameter; adding the corresponding quantity of control registers, state registers and interrupt controllers in a single-function PCI device register, wherein the control registers, the state registers and the interrupt controllers are respectively used for operating a simulation interface of each multi-function device; and registering the single-function PCI devices to be the corresponding quantity of multi-function devices to an operating system kernel in the PCI device driver to produce the corresponding quantity of simulation interfaces. According to the invention, the PCI devices with a physical characteristic of single function are simulated to multi-function PCI devices in the PCI device driver to ensure that users can operate and control the single-function PCI devices more easily without changing the using way.

Description

technical field [0001] The invention relates to the field of PCI device driving, in particular to a method and device for simulating a single-function PCI device in physical characteristics into an application-program-controllable PCI multi-function device in a driver program through the cooperation of software and hardware. Background technique [0002] With the continuous update and development of computer applications, the bandwidth requirements of data transmission in computers are getting higher and higher, and the bandwidth of traditional internal buses is far from meeting the needs of these applications. Therefore, PCI (abbreviation for Peripheral Component Interconnect, meaning unexpected Set the component interconnection) bus standard. PCI is widely used in computer systems because of its high performance, low cost and good scalability, especially for connecting and controlling CPU (Central Processing Unit) and PCI devices. The so-called PCI device refers to a devi...

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Problems solved by technology

[0004] Aiming at the problem that the existing technology cannot represent a single-function PCI device as a PCI multi-function device in the user space of the operating system, causing some inconvenience to the user, the purpose of the present invention is to provide a device that is more convenient to operate without changing the way the user uses it. Method for simulating a single-function PCI device into a multi-function PCI device

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