“Configuration Request Routing Rules” 描述了不同类型设备（Endpoint、Root Port、Switch、PCIe-PCI Bridge）如何路由和处理配置请求（包括Type 0和Type 1）。

针对Endpoint的规则

For Endpoints, the following rules apply:

• If Configuration Request Type is 1,
  Follow the rules for handling Unsupported Requests

• If Configuration Request Type is 0,
  Determine if the Request addresses a valid local Configuration Space of an implemented Function
  If so, process the Request
  If not, follow rules for handling Unsupported Requests

逐句解释：

• “If Configuration Requ