Supermicro X13SWA-TF User Manual page 95

IOAT Configuration

Relaxed Ordering
Select Yes to allow certain transactions to be processed and completed before other
transactions that have already been enqueued. The options are No and Yes.
Intel VT for Directed I/O (VT-d)

Intel VT for Directed I/O (VT-d)
Select Enable to use Intel Virtualization Technology for Direct I/O VT-d support by
reporting the I/O device assignments to the Virtual Machine Monitor (VMM) 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. (DMA is the abbreviation for Direct
Memory Access. DMAR is the abbreviation for DMA Remapping Reporting.)
Interrupt Remapping (Available when "Intel VT for Directed I/O (VT-d)" is set to
Enable)
Select Enable to support I/O DMA transfer remapping and device-generated interrupts.
The options are Auto, Enable, and Disable.
PCIe ACSCTL (Available when "Intel VT for Directed I/O (VT-d)" is set to
Enable)
Select Enable to program ACS control to Chipset PCIe Root Port bridges. Select Dis-
able to program ACS control to all PCIe Root Port bridges. The options are Enable
and Disable.
IIO-PCIe Express Global Options
PCIe ASPM Support (Global)
Use this feature to disable the Active State Power Management (ASPM) support for all
PCIe root ports. The options are Disable and Auto.
IIO eDPC Support
Use this feature to configure the setting for IIO Enhanced Downstream Port Containment
(eDPC) support for your system in an effort to improve the error containment capacity
within the PCIe subsystem when an uncorrected error is detected either at the root port
or at the switch downstream port. Select Disable to disable IIO eDPC support. Select
On Fatal Error to enable IIO eDPC support in your system when a fatal error occurs.
Select On Fatal and Non-Fatal Error to enable IIO eDPC support when an error, fatal
or non-fatal, has occurred. The options are Disable, On Fatal Error, and On Fatal and
Non-Fatal Errors.
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Chapter 4: UEFI BIOS