Www.lannerinc.com; Appendix 1: About The Non-Transparent Bridge - Lanner HCP-72i1 User Manual

Appendix 1:
About the Non-
Transparent Bridge
The PCI-E Non-Transparent Bridge (NTB) hardware is a
point-to-point PCI-E bus connecting 2 systems, the local
and the remote systems. When configured, writes to the
device's PCI mapped memory will be mirrored to a buffer
on the remote system. The size of BAR is configured
via BIOS. The NTB Linux driver uses this point-to-point
communication as a method to transfer data from one
system to the other. Some virtual device drivers will be
developed to take advantage of NTB's communication
and make it more usable to end users. For example, a
virtual network driver has been developed to transfer
Ethernet frames as well as TCP/IP packets to the remote
system.
In Lanner's Main board, we use type 1 configuration. And
PCIE link width supports Gen3 x8.
Diagram A: NTB Ports Connected Back-to-Back

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Configuring NTB under the BIOS
To enter the BIOS Setup Utility, press the TAB button
when powering on the device, if you are using a PC to
connect with the device.
Press "Delete" if you are using a keyboard with the device.
For BIOS navigation, please see "BIOS Setup".
1. Go to "Chipset" --> "IOH Configuration" and press
"Enter".
2. You will see "Intel NTB Configuration". Press "Enter" to
access its sub-menu.
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