Method and apparatus for remotely controlling peripheral component interconnect express (pcie) device, electronic device, and medium

A method for remotely controlling a Peripheral Component Interconnect Express (PCIe) device, wherein at an initialization stage, the method comprises:

• starting a local server, and pre-allocating an address space for each virtual PCIe device in a PCIe hardware device control component;
• when the local server connects to a remote PCIe hardware device, determining a remote server that needs to provide the remote PCIe hardware device, determining the remote PCIe hardware device and a to-be-connected remote PCIe hardware device, and logically removing the to-be-connected remote PCIe hardware device from the remote server;
• configuring a PCIe hardware device agent component corresponding to the remote PCIe hardware device, and setting a working mode of the PCIe hardware device agent component to a remote service mode;
• allocating an address range of a PCIe Base Address Register (BAR) space in the PCIe hardware device control component for the virtual PCIe device;
• obtaining a required PCIe BAR space corresponding to the remote PCIe hardware device;
• based on a start address of the PCIe BAR space of the virtual PCIe device in the PCIe hardware device control component, re-allocating an address of a PCIe BAR space corresponding to the remote PCIe hardware device, such that the address of the PCIe BAR space of the remote PCIe hardware device is the same as an address of the PCIe BAR space of the virtual PCIe device in the PCIe hardware device control component;
• and synchronizing the address of the PCIe BAR space of the remote PCIe hardware device to the PCIe hardware device agent component;
• establishing a corresponding virtual address structure for an address space related to a PCIe hardware device in the PCIe hardware device control component and the PCIe hardware device agent component;
• exchanging address structure of the virtual PCIe device in the PCIe hardware device control component with address structure of the PCIe hardware device agent component, obtaining complete address structure, separately registering the complete address structure to a local Remote Direct Memory Access (RDMA) network interface card and a remote RDMA network interface card, and establishing a connection between the local RDMA network interface card and the remote RDMA network interface card;
• and
• configuring a virtual PCIe bus, and adding a sub-bus under a root virtual PCIe bus, wherein the sub-bus corresponds to the virtual PCIe device in the PCIe hardware device control component.