公开(公告)号：US20150293873A1

公开(公告)日：2015-10-15

申请号：US14752099

申请日：2015-06-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wesley Shao ,  Muhui Lin ,  Lijiang Li

IPC: G06F13/40 ,  G06F13/42

CPC classification number: G06F13/4045 ,  G06F13/404 ,  G06F13/4221 ,  G06F2213/0026

Abstract: A method for extending a Peripheral Component Interconnect Express (PCIe) domain. A configuration space address can be allocated to a PCIe device in an extended domain from a memory address of a root complex endpoint device, a correspondence between the configuration space address and a bus number/device number/function number (BDF) can be established, and a bus number can be allocated from a second bus set of the extended domain to a PCIe device discovered in the extended domain, where the bus number is used for determining the BDF of the PCIe device discovered in the extended domain, so as to access, according to the correspondence between the configuration space address and the BDF and by using the BDF of the PCIe device discovered in the extended domain, a configuration space register of the PCIe device discovered in the extended domain.

Abstract translation: 扩展外围组件互连Express（PCIe）域的方法。 配置空间地址可以从根复合端点设备的存储器地址分配给扩展域中的PCIe设备，可以建立配置空间地址与总线号/设备号/功能号（BDF）之间的对应关系， 并且总线号码可以从扩展域的第二总线组分配给在扩展域中发现的PCIe设备，其中总线号用于确定在扩展域中发现的PCIe设备的BDF，以便访问 根据配置空间地址和BDF之间的对应关系，并通过使用在扩展域中发现的PCIe设备的BDF，在扩展域中发现的PCIe设备的配置空间寄存器。

公开(公告)号：US09690739B2

公开(公告)日：2017-06-27

申请号：US14752099

申请日：2015-06-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wesley Shao ,  Muhui Lin ,  Lijiang Li

IPC: G06F13/42 ,  G06F13/36 ,  G06F13/40

CPC classification number: G06F13/4045 ,  G06F13/404 ,  G06F13/4221 ,  G06F2213/0026

Abstract: A method for extending a Peripheral Component Interconnect Express (PCIe) domain. A configuration space address can be allocated to a PCIe device in an extended domain from a memory address of a root complex endpoint device, a correspondence between the configuration space address and a bus number/device number/function number (BDF) can be established, and a bus number can be allocated from a second bus set of the extended domain to a PCIe device discovered in the extended domain, where the bus number is used for determining the BDF of the PCIe device discovered in the extended domain, so as to access, according to the correspondence between the configuration space address and the BDF and by using the BDF of the PCIe device discovered in the extended domain, a configuration space register of the PCIe device discovered in the extended domain.