ADLINK Express-BE - Manual (Page 58)

Page 58 Express-BE
Feature Options Description
Maximum Read Request Auto
128 Bytes
256 Bytes
512 Bytes
1024 Bytes
2048 Bytes
4096 Bytes Set maximum read request size of PCI Express device or allow
system BIOS to select the value.
PCI Express Link Register Settings Info only
ASPM Support
WARNING: Enabling ASPM may cause
some
PCI-E devices to fail
Disabled
Auto
Force L0s
Set the ASPM Level: Force L0s - Force all links to L0s
Auto - BIOS auto configure
Disabled - Disables ASPM
Extended Synch Disabled
Enabled If enabled, allows generation of Extended Synchronization patterns.
Link Training Retry Disable
2
3
5
Defines number of retry attempts software will take to retrain the
link if previous training attempt was unsuccessful.
Link Training Timeout (Us) 100 Defines number of microseconds software will wait before polling
'Link Training' bit in Link Status register. Value range from 10 to
10000 uS.
Unpopulated Links Keep Link ON
Disabled
In order to save power, software will disable unpopulated PCI
Express links if this option set to Disabled.
Restore PCIE Registers Enabled
Disabled On non-PCI Express aware OSes (pre Windows Vista) some
devices may not be correctly reinitialized after S3. Enabling this
restores PCI Express device configurations on S3 resume.
Warning: Enabling this may cause issues with other hardware after
S3 resume.
7.3.7.2. PCI Express Gen2 Settings
Feature Options Description
PCI Express Gen2 Device Register Settings Info only
Completion Timeout Default
Shorter
Longer
Disabled In device functions that support Completion Timeout
programmability, allows system software to modify the Completion
Timeout value. "Default": 50us to 50ms. If "Shorter" is selected,
software will use shorter timeout ranges supported by hardware. If
"Longer" is selected, software will use longer timeout ranges.
ARI Forwarding Enabled
Disabled If supported by hardware and set to "Enabled", the Downstream
Port disables its traditional Device Number field being 0
enforcement when turning a Type1 Configuration Request into a
Type0 Configuration Request, permitting access to Extended
Functions in an ARI Device immediately below the Port. Default
value: Disabled"
AtomicOp Requester Enable Enabled
Disabled
If supported by hardware and set to "Enabled", this function
initiates AtomicOp Requests only if Bus Master Enable bit is in the
Command Register Set.
AtomicOp Egress Blocking Enabled
Disabled If supported by hardware and set to "Enabled", outbound
AtomicOp Requests via Egress Ports will be blocked.
IDO Request Enable Enabled
Disabled
If supported by hardware and set to "Enabled", this permits setting
the number of ID-Based Ordering (IDO) bit (Attribute[2]) requests
to be initiated.