Datasheet

Intel
®
E8870 Scalable Node Controller (SNC) Datasheet 6-15
Reliability, Availability, and Serviceability
For E8870 chipset components, the DevNum shown in the example above is the same as the
NodeId that is used to identify nodes. There may be more than one component reporting SNC
functions and registers, with a different value for DevNum. This would occur if there is more than
one SNC in the platform.
It is not necessary for all error log registers provided by the component to be part of the error
record. Only the error log associated with the fatal/non-fatal errors identified by FERRST need be
included.
6.5.3 Error Interpretation Guidelines
This section provides general guidelines regarding interpretation of the information contained in
the chipset error record. To assist in the interpretation of the error record, errors can be classified
into four different classes (these classes are separate from the error type used in signaling the error
to the system).
• Non-continuable (NC)
General system processing may be compromised. These are errors associated with coherency
protocols, the operation of the processor bus or scalability port, etc. These errors may cause
other errors to occur in the system.
• Non-continuable-Subsystem (NCS)
These errors may not compromise general system processing, but further operations of the
subsystem (bus, interface) may be compromised. On the E8870 chipset, these errors generally
impact the I/O buses or devices.
• Continuable Single (CS)
These errors do not compromise further system operation. These errors do not propagate
across components.
• Continuable Trailing (CT)
SIOH 0-4 5C REDHUB 12
Hub Interface data log for non-fatal
errors.
SIOH 0-4 68 NRECHUB 16
Hub Interface control log for fatal
errors.
SIOH 6 84 RECSPL0 8
SP0 Link layer control log for non-
fatal errors.
SIOH 6 8C REDSPL0 2
SP0 Link layer data log for non-fatal
errors.
SIOH 6 A0 RECSPL1 8
SP1 Link layer control log for non-
fatal errors.
SIOH 6 AC REDSPL1 8
SP1 Link layer data log for non-fatal
errors.
SIOH 6 44 FERRST
a
12 First error status register.
SIOH 6 4C SERRST
a
12 Second error status register.
SIOH 6 64 RECSPP 8 SP Protocol log for non-fatal errors.
SIOH 6 78 NRECSPP 8 SP Protocol log for fatal errors.
a. must be part of the error record.
Table 6-3. Intel
®
E8870 Chipset Error Status and Log Registers (Continued)
Component Function Reg_ID Register Name
Size
(Bytes)
Description