DMIBAR Registers—Direct Media Interface (DMI) RCRB
R
104 Intel
®
82925X/82925XE MCH Datasheet
7.1.7 DMIVC0RSTS—DMI VC0 Resource Status
MMIO Range: DMIBAR
Address Offset: 01Ah
Default Value: 00000002h
Access: RO
Size: 16 bits
This register reports the Virtual Channel specific status.
Bit Access &
Default
Description
15:2 Reserved
1 RO
1b
VC Negotiation Pending (NP):
0 = Virtual channel is Not being negotiated with ingress ports.
1 = Virtual channel is still being negotiated with ingress ports.
0 RO
0b
Port Arbitration Tables Status (ATS): There is no port arbitration table for this
VC, so this bit is reserved at 0.
7.1.8 DMIVC1RCAP—DMI VC1 Resource Capability
MMIO Range: DMIBAR
Address Offset: 01Ch
Default Value: 00008001h
Access: RO
Size: 32 bits
Bit Access &
Default
Description
31:24 RO
00h
Port Arbitration Table Offset (AT): This field indicates the location of the port
arbitration table in the root complex. A value of 3h indicates the table is at offset
30h.
23 Reserved
22:16 RO
00h
Maximum Time Slots (MTS): This value is updated by platform BIOS based upon
the determination of the number of time slots available in the platform.
15 RO
1b
Reject Snoop Transactions (RTS): All snoopable transactions on VC1 are
rejected. This VC is for isochronous transfers only.
14 RO
0b
Advanced Packet Switching (APS): This VC is capable of all transactions, not
just advanced packet switching transactions.
13:8 Reserved
7:0 RO
01h
Port Arbitration Capability (PAC): This field indicates the port arbitration
capability is time-based WRR of 128 phases.