Lanner HCP-72i1 - Default Settings of PCI Express Switch; Demonstrating the Switching Methods for the Pcie Switch

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Default Settings of PCI Express Switch
The following lists out the default settings of the PCI Express switch.
BIOS Version :
MB-7220(HCP-72I1) Ver.AA0 12/30/2014 Bottom Board
MB-7220(HCP-72I1) Ver.AA0 12/30/2014 Upper Board
PLX 8748 Virtual Switch Table :
VS0 : upstream port 0x0, downstream port 0x8 and 0x9
VS1 : upstream port 0x1, downstream port 0x10 and 0x11
Note:
Upstream Port : The port that PCI Express bridge upward connects to the root port.•
Downstream Port : The port that PCI Express bridge downward connects to the device.•
Kernel Patch Provided by Lanner :
Solve the issue of insufficient BAR size space for VS0 and VS1.1.
The setting of “Payload size = 256” for Intel 82599 will improve the performance.2.
Demonstrating the Switching Methods for the PCIe Switch
The following lists out the environmental setting for the demonstration:
PCI root port on the Bottom Board connects to Port ID 0x0 of VS0.•
PCI root port on the Upper Board connects to Port ID 0x1 of VS1.•
The default Management Port is Port ID 0x0, therefore, only the Bottom Board can control PCI Express Switch. •
Others can control individual Port ID only.
Port ID 0x8, 0x9, 0x10 and 0x11 connect one set of Intel 82599 PCI Express LAN device respectively.•
Device 0 and 1 connect VS0 to the Bottom Board.•
Device 2 and 3 connect VS1 to the Upper Board.•