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Chapter 7: BIOS
PCIe/PCI/PnP Configuration
The following PCI information will be displayed:
•
PCI Bus Driver Version
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 Enabled and Disabled.
SR-IOV (Available if the system supports Single-Root Virtualization)
Select Enabled for Single-Root IO Virtualization support. The options are Enabled
and Disabled.
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, and 256 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. The options
are Disabled, and Auto.
Warning: Enabling ASPM support may cause some PCI-E devices to fail!
MMIOHBase
Use this item to select the base memory size according to memory-address map-
ping for the IO hub. The base memory size must be between 4032G to 4078G. The
options are 56T, 48T, 24T, 512G, and 256G.
MMIO High Size
Use this item to select the high memory size according to memory-address mapping
for the IO hub. The options are 256G, 128G, 512G, and 1024G.
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