mpss--Max_Payload_Size Supported 7.5.3.3 Device Capabilities Register (Offset 04h) 7.5.3.4 Device Control Register (Offset 08h) 2. 获取PCIe设备MPSS和MPS lspci 可以查询设备MPSS和MPS DevCap:MaxPayload 256 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited ExtTag- AttnBtn- AttnInd- PwrInd...