US 2018/0121383 A1Published application

Hot plug method, host controller, host, and pcie bridge device

AssigneeHuawei Technologies Co., Ltd.

InventorsBenhua Peng, Fu Wang, Pei Wu, Huaifeng Xiao, Xiaoping Zhu

Life of this patent

Estimating the term…

Loading patent…

Abstract

A hot plug method, a host controller, a host, and a PCIe bridge device. The method includes: generating, by a host controller, a first notification packet, where the first notification packet includes hot plug interruption information, and the hot plug interruption information indicates that a first PCIe device is to be hot-plugged; sending, by the host controller, the first notification packet to a host, so that the host performs, according to the first notification packet, a hot plug operation corresponding to the PCIe device; and receiving, by the host controller, a second notification packet sent by the host, and sending the second notification packet to a user equipment controller, to facilitate the user equipment controller to instruct a user to insert or remove the PCIe device, where the second notification packet is for indicating that the hot plug operation corresponding to the PCIe device is completed.

Claims17

Dependent claims

A hot plug method, wherein the method is applied to a remote Peripheral Component Interconnect Express (PCIe) system, the remote PCIe system comprises a host, a host controller, a PCIe device, and a user equipment controller, and the hot plug method comprises:

generating, by the host controller, a first notification packet, wherein the first notification packet includes hot plug interruption information, the hot plug interruption information indicating that the PCIe device is to be hot-plugged, wherein the host is connected to the host controller, the PCIe device is connected to the user equipment controller, and the host controller communicates with the user equipment controller by through a network;
sending, by the host controller, the first notification packet to the host;
receiving, by the host, the first notification packet sent by the host controller;
performing, by the host according to the first notification packet, a hot plug operation corresponding to the PCIe device;
generating, by the host, a second notification packet, and sending the second notification packet to the host controller, wherein the second notification packet is for indicating that the hot plug operation corresponding to the PCIe device is completed;
and
receiving, by the host controller, the second notification packet sent by the host, and sending the second notification packet to the user equipment controller, to facilitate the user equipment controller to instruct a user to insert or remove the PCIe device.

4 more elements

A hot plug method, wherein the method is applied to a remote Peripheral Component Interconnect Express (PCIe) system, the PCIe system includes a host, a first PCIe bridge device, a second PCIe bridge device and N PCIe devices, the first PCIe bridge device is connected to the host, the first PCIe bridge device is connected to the second PCIe bridge device, the N PCIe devices are mounted in downstream of the second PCIe bridge device, N is an integer greater than or equal to 1, and the method comprises:

detecting, by the first PCIe bridge device, whether a second link is abnormal, wherein the second link is a link between the first PCIe bridge device and the second PCIe bridge device;
and
generating, by the first PCIe bridge device, N fourth notification packets after detecting the second link is abnormal, wherein the N fourth notification packets are used to instruct the host to perform a hot plug operation corresponding to the N PCIe devices.

A remote Peripheral Component Interconnect Express (PCIe) system, wherein the system comprises a host and a host controller, a PCIe device, and a user equipment controller, the host is connected to the host controller, the PCIe device is connected to the user equipment controller, and the host controller communicates with the user equipment controller by through a network,

wherein, the host controller is configured to:
generate a first notification packet, wherein the first notification packet includes hot plug interruption information, the hot plug interruption information indicating that the PCIe device is to be hot-plugged;
to send the first notification packet to the host, to receive a second notification packet sent by the host, and to send the second notification packet to the user equipment controller, wherein the second notification packet is for indicating that the hot plug operation corresponding to the PCIe device is completed;
and
the host is configured to:
receive the first notification packet, perform a hot plug operation corresponding to the PCIe device according to the first notification packet, generate the second notification packet send the second notification packet to the host controller.

3 more elements

Dependencies are inferred from the claim text.