Processor Configuration Registers
2.12.16 DMIVCMRSTS—DMI VCm Resource Status Register
B/D/F/Type:
Address Offset:
Reset Value:
Access:
0/0/0/DMIBAR
3E–3Fh
0002h
RO-V
Size:
16 bits
BIOS Optimal Default
0000h
Reset
Value
RST/
PWR
Bit
Access
Description
15:2
RO
0h
1b
0h
Reserved (RSVD)
Virtual Channel Negotiation Pending (VCNEGPND)
0 = The VC negotiation is complete.
1 = The VC resource is still in the process of negotiation
(initialization or disabling).
Software may use this bit when enabling or disabling the VC. This
bit indicates the status of the process of Flow Control
initialization. It is set by default on Reset, as well as whenever
the corresponding Virtual Channel is Disabled or the Link is in the
DL_Down state. It is cleared when the link successfully exits the
FC_INIT2 state.
Before using a Virtual Channel, software must check whether the
VC Negotiation Pending fields for that Virtual Channel are cleared
in both Components on a Link.
1
RO-V
Uncore
0
RO
Reserved (RSVD)
2.12.17 DMIRCLDECH—DMI Root Complex Link Declaration
Register
This capability declares links from the respective element to other elements of the root
complex component to which it belongs and to an element in another root complex
component. See PCI Express* specification for link/topology declaration requirements.
B/D/F/Type:
Address Offset:
Reset Value:
Access:
0/0/0/DMIBAR
40–43h
08010005h
RO
Size:
32 bits
Reset
Value
RST/
PWR
Bit
Access
Description
Pointer to Next Capability (PNC)
This field contains the offset to the next PCI Express capability
structure in the linked list of capabilities (Internal Link Control
Capability).
31:20
RO
080h
Uncore
Link Declaration Capability Version (LDCV)
Hardwired to 1 to indicate compliances with the 1.1 version of
the PCI Express specification.
Note: This version does not change for 2.0 compliance.
19:16
15:0
RO
RO
1h
Uncore
Uncore
Extended Capability ID (ECID)
a value of 0005h identifies this linked list item (capability
structure) as being for PCI Express Link Declaration Capability.
0005h
228
Datasheet, Volume 2
INTEL [ INTEL ]
