Datasheet

Intel
®
E8870 Scalable Node Controller (SNC) Datasheet 3-61
Configuration Registers
3.10.16 HPPMR: Hot Page Control and Response
The PMR register controls operation of the Hot Page counters and provides max count and counter
index status.
20:16 RW 0
Packet Src Node
1111 All sources
xxxxx Src Node ID (except 11111)
15:14 RW 0
SP Port Select
x1 - SP0
1x - SP1
Packet Type Selection Group
13:7 RW 0
Type Data
XXXXYYC
For request packets, the fields are:
[13:10] - XXXX is the request type major encoding
[9:8] - YY is the request type minor encoding
[7] - C is the coherency bit
For response packets, the fields are:
[13:10] - XXXX is the response type
[9:8] - YY indicates the completion bit value (0Y)
[7] - C is the coherency bit
6:0 RW 0
Type_Mask
This is a mask field for the Type Data field. It determines which bits of the
Type_Data field to be used in selecting the event. A ’1’ in a bit position will
“don’t care” that bit, therefore a value of 7Fh (all 1’s) selects all packets
regardless of the value of the Type Data field.
Device: NodeID
Function: 2
Offset: ECh (SPPMD0), FCh(SPPMD1) (Continued)
Bit Attr Default Description
Device: NodeID
Function: 3
Offset: 60h
Bit Attr Default Description
31:21 RO 0
Hot Page RAM Index
Pointer to the entry that exceeded the comparison conditions.
20 RW 0
AutoRange Mode
1 - AutoRange mode active.
Note: The Comparison Mode field should be enabled in one of the three active
modes.
19:18 RW 0
Comparison Mode
This field defines how the HPCMP register is used:
00 - Disabled. (No comparison with the HPCMP register.
01 - Compare count with HPCMP register for Local or Remote accesses.
10 - Compare count with HPCMP register for Remote accesses only.
11 - Update HPCMP register when count is greater.