Datasheet

Reliability, Availability, Serviceability (RAS)
Intel
®
Xeon
®
Processor C5500/C3500 Series
Datasheet, Volume 1 February 2010
400 Order Number: 323103-001
84
Completion
timeout on NP
transactions
outstanding on PCI
Express/DMI
1
Intel
®
QPI to PCIe read: IIO
returns normal response to
Intel
®
QPI and all 1’s for read
data.
Intel
®
QPI to PCIe non-posted
write: IIO returns normal
response to Intel
®
QPI.
PCIe to PCIe read/non-posted
write: UR
3
is returned on PCIe.
SMBus reads: IIO returns a UR
status on SMbus.
Log error per PCI Express AER requirements for the
corresponding error.
Log in XPGLBERRSTS, XPGLBERRPTR registers.
If PCIe uncorrectable error is forwarded to the global
error registers, it is logged in global non-fatal log
registers - GNERRST, GNFERRST, GNNERRST,
GNFERRTIME
Note:
a) A poisoned TLP received from PCIe is always
treated as advisory-nonfatal error, if the associated
severity is set to non-fatal. Also, received poisoned
TLPs that are not forwarded over Intel
®
QPI are
always treated as advisory-nonfatal errors, if
severity is set to non-fatal.
b) When a poisoned TLP is transmitted down a PCIe
link, IIO does not log that condition in the AER
registers.
85
Received PCIe
Poisoned TLP
Intel
®
QPI to PCIe read: IIO
returns normal response and
poisoned data to Intel
®
QPI, if
Intel
®
QPI has poisoned poison
enabled. If poison is disabled
then this error will be treated as
a “QPI Parity Error”.
PCIe to Intel
®
QPI write: IIO
forwards poisoned indication to
Intel
®
QPI, if Intel
®
QPI has
poisoned poison enabled. If
poison is disabled then this error
will be treated as a “QPI Parity
Error”.
PCIe to PCIe read: IIO forwards
completion with poisoned data to
original requester, if the root
port in the outbound direction
for the completion packet, is not
in ‘Stop and Scream’ mode. If
the root port is in ‘Stop and
scream’ mode, the packet is
dropped and the link is brought
down immediately (i.e. no
packets on or after the poisoned
data is allowed to go to the link).
PCIe to PCIe posted/non-posted
write: IIO forwards write with
poisoned data to destination
link, if the root port of the
destination link, is not in ‘Stop
and Scream’ mode. If the root
port is in ‘Stop and scream’
mode, the packet is dropped and
the link is brought down
immediately (i.e. no packets on
or after the poisoned data is
allowed to go to the link) and a
UR
3
response is returned to the
original requester, if the request
is non-posted.
SMBus to IIO accesses requests:
IIO returns a UR response status
on smbus
Table 129. IIO Error Summary (Sheet 7 of 15)
ID Error
Default
Error
Severity
Transaction Response Default Error Logging
1