Datasheet

Processor Integrated I/O (IIO) Configuration Registers
140 Datasheet, Volume 2
3.2.8.9 DMIVCPRSTS—DMI VCP Resource Status Register
Reports the Virtual Channel specific status.
3.2.8.10 DMIVCMRCAP—DMI VCM Resource Capability Register
DMIVCPRSTS
Bus: N Device: 0 Function: 0 MMIO BAR: DMIRCBAR
Offset: 32
Bit Attr
Reset
Value
Description
15:2 RV 0h Reserved
1RO-V1b
Virtual Channel Private 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 must check whether
the VC Negotiation Pending fields for that Virtual Channel are cleared in both
Components on a Link.
0RV0hReserved
DMIVCMRCAP
Bus: 0 Device: 0 Function: 0 MMIO BAR: DMIRCBAR
Offset: 34
Bit Attr
Reset
Value
Description
31:16 RV 0h Reserved
15 RO 1b
Reject Snoop Transactions
0 = Transactions with or without the No Snoop bit set within the TLP header are
allowed on this VC.
1 = Any transaction without the No Snoop bit set within the TLP header will be
rejected as an Unsupported Request.
14:0 RV 0h Reserved