301467-005 Datasheet, PDF (121/426 Pages) Intel Corporation – Express Chipset

DMIBAR Registers—Direct Media Interface (DMI) RCRB
R
7.1.9
DMIVC1RCTL1—DMI VC1 Resource Control
MMIO Range:
Address Offset:
Default Value:
Access:
Size:
DMIBAR
020h
00100000h
R/W, RO
32 bits
This register controls the resources associated with Virtual Channel 1.
Bit
31
30:27
26:24
23:20
19:17
16:8
7:1
0
Access &
Default
Description
R/W
0b
RO
0h
R/W
001b
R/W
0h
R/W
00h
Virtual Channel Enable (EN):
0 = Disable.
1 = Enable.
Reserved
Virtual Channel Identifier (ID): This field indicates the ID to use for this virtual
channel.
Reserved
Port Arbitration Select (PAS): This field indicates which port table is being
programmed. The only permissible value of this field is 4h for the time-based
WRR entries.
Reserved
Transaction Class / Virtual Channel Map (TVM): This field indicates which
transaction classes are mapped to this virtual channel. When a bit is set, this
transaction class is mapped to the virtual channel.
Reserved
7.1.10
DMIVC1RSTS—DMI VC1 Resource Status
MMIO Range:
Address Offset:
Default Value:
Access:
Size:
DMIBAR
026h
0000h
RO
16 bits
This register reports the Virtual Channel specific status.
Bit
Access &
Default
Description
15:2
Reserved
1
RO
VC Negotiation Pending (NP):
0b
0 = Virtual channel is Not being negotiated with ingress ports.
1 = Virtual channel is still being negotiated with ingress ports.
0
Reserved
Datasheet
121