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Oracle® Server X8-2 Service Manual

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Updated: January 2020
 
 

IO Menu


Note -  PCIe slot 1 is nonfunctional in single-processor systems.
image:This figure shows the BIOS IO Menu image.

PCI Subsystem Settings

PCI Subsystem Settings Option
Description
PCI 64 Bit Resources Allocation
Enable (default) or disable 64-bit capable devices to be decoded in the 4G address space. This setting is available only if the system supports 64-bit decoding.
Maximum Payload
Set the Maximum Payload of the PCI Express device or allow the System BIOS to select the value.
Auto (default)/128 Bytes/256 Bytes/512 Bytes/1024 Bytes/2048 Bytes/4096 Bytes
Maximum Read Request
Set the Maximum Read Request of the PCI Express device or allow the System BIOS to select the value.
Auto (default)/128 Bytes/256 Bytes/512 Bytes/1024 Bytes/2048 Bytes/4096 Bytes
PCIe Hot-Plug Support
Enable (default) or disable the OS to support PCIe hot-plug.

IO Virtualization

IO Virtualization Option
Description
VT-d
Enable (default) or disable Intel Virtualization Technology for directed I/O (VT-d) by reporting the I/O device assignment to VMM through DMA remapping reporting (DMAR) Advance Configuration Power Interface (ACPI) tables.
ACS
Enable programs Access Control Services (ACS) to toggle peer to peer transactions between PCIe devices. Disable (default) programs ACS to only chipset PCIe root ports bridges for IOMMU separation.
SR-IOV Support
Enable (default) or disable Single Root I/O Virtualization (SR-IOV) to configure devices into multiple virtual devices that can be used on virtual OS installations. If supported by the hardware and set to enabled, all devices on the system that are SR-IOV capable are configured to support SR-IOV and I/O resources are allocated to the device as normal. If set to disabled, I/O resources are not allocated to the device.
ARI
If Alternate Routing ID (ARI) is supported by the hardware and set to enabled (default), devices are permitted to locate virtual functions (VFs) in function numbers 8 to 255 of the captured bus number, instead of normal function numbers 0 to 7.

IOAT Configuration

IOAT Configuration Option
Description
Intel IOAT
Enable (default) or disable Intel I/O Acceleration Technology (I/OAT) devices to offload memory copies from the processor using direct memory accesses (DMA) to improve performance on I/O transactions.
DCA Support
Enable (default) Direct Cache Access (DCA) for a capable I/O device, such as a network controller, to place data directly into the CPU cache, reducing cache misses and improving application response times.

PCIE Hardware Slot Configuration

PCIE Hardware Slot Configuration Option
Description
Slot 1 Hardware Configuration
Displays and provides options to configure hot-plug functionality or FM10K bifurcation for the PCIe HBA slot. FM10K bifurcation allows an Ethernet card to appear as multiple interfaces.
PCIE Slot Hardware Configuration
Enable or disable hot-plug or FM10K bifurcation, which allows an Ethernet card to appear as multiple interfaces.
  • HotPlug Disabled (default)

  • HotPlug Enabled

  • FM_10_8x8_Bifurcation

Slot 2, Slot 3, and Slot 4
See Slot 1 description.

Internal Devices

Internal Devices Option
Description
NET0
Displays and provides options to change the internal device settings.
PCI-E UEFI Driver Enable
Enable (default) or disable PCI-E UEFI Driver. If set to enabled, UEFI Driver for the card executes as normal. If set to disabled, UEFI Driver for the card is not copied into memory and the execution of the UEFI Driver is inhibited.
NET1 and NET2
See NET0 description.

Add-in Cards

Add-in Cards Option
Description
Slot 1

Note -  PCIe slot 1 is nonfunctional in single-processor systems.

Displays and provides options to change the settings of the devices in PCIe slots.
IO Enable
Disable or enable (default) IO
PCI-E UEFI Driver Enable
Enable (default) or disable PCI-E UEFI Driver. If set to enabled, UEFI Driver for the card executes as normal. If set to disabled, UEFI Driver for the card is not copied into memory and the execution of the UEFI Driver is inhibited.
PCIE Slot DDIO
Enable (default) or disable DDIO Use_Allocating_Flow_WR for this PCIe slot.
Slot 2, Slot 3, and Slot 4
See Slot 1 description.

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