Chapter 6: BIOS
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PCIe/PCI/PnP Configuration
The following PCI information will be displayed:
•
PCI Bus Driver Version
•
PCI Devices Common Settings:
Above 4G Decoding (Available if the system supports 64-bit PCI decoding)
Select Enabled to decode a PCI device that supports 64-bit in the space above 4G Address.
The options are
Disabled
and Enabled.
SR-IOV Support (Available if the system supports Single-Root Virtualization)
Select Enabled for Single-Root IO Virtualization (SR-IOV) support. SR-IOV is an extension of
the PCI Express interface and consists of two functions: physical functions (PF) and virtual
functions (VF). PF is the primary function and is used to control and configure PCI Express
devices, whereas VF is the lightweight function that offers limited configuration. The options
are
Disabled
and Enabled
.
Maximum Payload
Select Auto for the system BIOS to automatically set the maximum payload value for a PCI-E
device to enhance system performance. The options are
Auto
, 128 Bytes, 256 Bytes, 512
Bytes, 1024 Bytes, 2048 Bytes, and 4096 Bytes.
Maximum Read Request
Select Auto for the system BIOS to automatically set the maximum size for a read request
for a PCI-E device to enhance system performance. The options are
Auto
, 128 Bytes, 256
Bytes, 512 Bytes, 1024 Bytes, 2048 Bytes, and 4096 Bytes.
ASPM Support
Use this item to set the Active State Power Management (ASPM) level for a PCI-E device.
Select Auto for the system BIOS to automatically set the ASPM level based on the system
configuration. Select Disabled to disable ASPM support. Select Force L0s to force all links
to L0s state. The options are
Disabled
, Auto, and Force L0s.
Warning:
Enabling ASPM support may cause some PCI-E devices to fail!
ARI Forwarding
Select Enabled to lift a traditional Device Number restriction when turning a Type1 Configuration
request into a Type0 Configuration request to permit access to extended functions in an ARI
Device immediately below the port. The options are
Disabled
and Enabled.
CPU SLOT PCI-E 3.0 X8 OPROM
Use this item to select the firmware type for the add-on card for this slot. The options are
Disabled, Legacy, and
EFI
.
