Specification Sheet

DMIBAR Registers
144 Datasheet, Volume 2 of 2
6.7 DMI VC0 Resource Status (DMIVC0RSTS)—Offset
1Ah
Reports the Virtual Channel specific status.
Access Method
Default: 2h
Type: MEM
(Size: 16 bits)
Offset: [B:0, D:0, F:0] + 1Ah
15 12 8 4 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
RSVD
VC0NP
RSVD
Bit
Range
Default &
Access
Field Name (ID): Description
15:2
0h
RO
Reserved (RSVD): Reserved.
1
1h
RO_V
VC0NP: Virtual Channel 0 Negotiation Pending:
0: The VC negotiation is complete.
1: The VC resource is still in the process of negotiation (initialization or disabling).
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.
BIOS Requirement: Before using a Virtual Channel, software should check whether
the VC Negotiation Pending fields for that Virtual Channel are cleared in both
Components on a Link.
0
0h
RO
Reserved (RSVD): Reserved.