Datasheet

Reliability, Availability, and Serviceability
6-20 Intel
®
E8870 Scalable Node Controller (SNC) Datasheet
6.5.4 ESP Error Logs
This section provides the format of the contents of the log registers for SP link layer and SP
protocol layer errors. The contents of the error logs vary with the type of the error that is detected.
Table 6-5 and Table 6-6 show the contents of the error log when the type of information that is
logged for the error is “control” information.
.
Table 6-5. Control: SP Request Header Error Log
SP Request Header Fields
Description Error Log Field
Field Name
Number of Bits in
Header
PktType 2 Packet Type: Req/Resp, Data/NoData 63
(Req/Resp)
DestNodeID 6 Destination Node ID
Coh 1 (hardware) Coherent or Not 62
SrcTxnID 6 Transaction ID assigned by Source Node 61:56
SrcNodeID 5 Source Node ID 55:51
StreamID 6 ID of Stream within the Source Node 50:47
(low order bits)
Attr 4 Transaction Attributes
Ord 2 Transaction ordering semantics
ReqType 6 Request Type 46:41
DLen 3 Requested Data Length
ByteEn 8 Byte Enables
Addr 47 To support 50 bits physical address 40:0
(A43-A3)
Reserved 31 For future use
ErrProt 16 Eight Error Protection bits for 64b information
Total Bits 144 64
Table 6-6. Control: SP Response Header Error Log
SP Response Header Fields
Description Error Log Field
Field Name
Number of Bits
in Header
PktType 2 Packet Type: Req/Resp, Data/NoData 63:62
DestNodeID 6 Destination Node ID 61:59
(low order bits)
Coh 1 (hardware) Coherent or Not 58
SrcTxnID 6 Transaction ID assigned by Source Node 57:52
SrcNodeID 5 Source Node ID 51:47
Attr 4 Transaction Attributes 46:43
CMP 1 Transaction Completion bit 42
RespType 4 Response Type 41:38
DLen 3 Length of Data Associated with the Packet 37:35
Route 2 Bits for efficient routing of response packets 34:33