Chapter 4: AMI BIOS
4-15
Non-Transparent Bridge PCIe Port D (Port 3A only)
Select Transparent Bridge to con
fi
gure the device installed on a PCI slot speci
fi
ed
by the user as a transparent bridge (TB) device. Select NTB (Non-Transparent
Bridge) to NTB to con
fi
gure the device installed on a PCI slot speci
fi
ed by the
user as a non-transparent bridge (TB) device used to connect to another TB
device. The options are
Transparent Bridge
, NTB to NTB, and NTB to RP.
Hide Port?
Use this feature to hide the root port from the operating system. The options
are
no
and yes.
IOAT (Intel® IO Acceleration) Con
fi
guration
Enable IOAT
Select Enable to enable Intel I/OAT (I/O Acceleration Technology) support,
which will signi
fi
cantly reduce CPU overhead by leveraging CPU architectural
improvements and freeing the system resource for other tasks. The options are
Disable and
Enable
.
No Snoop
Select Enable to support no-snoop mode for each CB device. The options are
Disable
and Enable.
Relaxed Ordering
Select Enable to enable Relaxed Ordering support which will allow certain
transactions to violate the strict-ordering rules of PCI bus for a transaction to be
completed prior to other transactions that have already been enqueued earlier.
The options are
Disable
and Enable.
Intel VT for Directed I/O (VT-d)
Intel VT for Direct I/O (VT-d)
Select Enable to use Intel Virtualization Technology support for Direct I/O VT-d
support
by reporting the I/O device assignments to the VMM (Virtual Machine
Monitor) through the DMAR ACPI Tables. This feature offers fully-protected I/O
resource sharing across Intel platforms, providing greater reliability, security and
availability in networking and data-sharing. The options are
Enable
and Disable.
Interrupt Remapping
Select Enable for Interrupt Remapping support to enhance system performance.
The options are
Enable
and Disable.