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Processor Configuration Registers

2.12.13 DMIVCPRSTS—DMI VCp Resource Status Register

This register reports the Virtual Channel specific status.

B/D/F/Type: 0/0/0/DMIBAR

Address Offset: 32–33h

Reset Value: 0002h

Access: RO-V

Size: 16 bits

BIOS Optimal Default 0000h

Bit Attr

Reset

Value

RST/

PWR

Description

15:2 RO 0h Reserved

1 RO-V 1b Uncore

Virtual Channel private Negotiation Pending (VCPNP)

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 when 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.

0RO 0h Reserved

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Intel CM8063701219000 Datenblatt Seite 195