Processor Configuration Registers
2.12.18 DMIESD—DMI Element Self Description Register
This register provides information about the root complex element containing this Link
Declaration Capability.
B/D/F/Type:
Address Offset:
Reset Value:
Access:
0/0/0/DMIBAR
44–47h
01000202h
RO, RW-O
32 bits
Size:
BIOS Optimal Default
0h
Reset
Value
RST/
PWR
Bit
Access
Description
Port Number (PORTNUM)
This field specifies the port number associated with this element
with respect to the component that contains this element. This
port number value is utilized by the egress port of the component
to provide arbitration to this Root Complex Element.
31:24
RO
01h
00h
02h
Uncore
Uncore
Uncore
Component ID (CID)
This field identifies the physical component that contains this
Root Complex Element.
BIOS Requirement: This field must be initialized according to
guidelines in the PCI Express* Isochronous/Virtual Channel
Support Hardware Programming Specification (HPS).
23:16
15:8
RW-O
RO
Number of Link Entries (NLE)
This field indicates the number of link entries following the
Element Self Description. This field reports 2 (one for MCH egress
port to main memory and one to egress port belonging to ICH on
other side of internal link).
7:4
3:0
RO
RO
0h
2h
Reserved (RSVD)
Element Type (ETYP)
This field indicates the type of the Root Complex Element.
a value of 2h represents an Internal Root Complex Link (DMI).
Uncore
Datasheet, Volume 2
229
INTEL [ INTEL ]
