Intel E7-8891 v2 CM8063601377422 Manuel D’Utilisation

Intel

®

 Xeon

® 

Processor E7-2800/4800/8800 v2 Product Family

249

Datasheet Volume Two: Functional Description, February 2014

Access Control Services Control Register.

1:1

RO_V (Device 2 and 3 

Function 0)
RO (Device 0 Function 0, 

Device 2 and 3 Function 1-3)

0x1

b:

Applies only to root ports. Indicates that the component 

implements ACS Translation Blocking.

0:0

RO_V (Device 2 and 3 

Function 0)
RO (Device 0 Function 0, 

Device 2 and 3 Function 1-3)

0x1

v:

Applies only to root ports. Indicates that the component 

implements ACS Source Validation. 

15:7

RV

-

Reserved.

6:6

RO

0x0

t:

Applies only to root ports. This is hardwired to 0b as the 

component does not implement ACS Direct Translated 

P2P.

5:5

RO

0x0

e:

Applies only to root ports. The component does not 

implement ACS P2P Egress Control and hence this bit 

should not be used by SW.

4:4

RW_L (Device 2 and 3 

Function 0)

RW (Device 0 Function 0, 

Device 2 and 3 Function 1-3)

0x0

u:

When this bit is set, transactions arriving from a root 

port that target the same port back down, will be 

forwarded. Normally such traffic would be aborted. 

Applies only to root ports.

3:3

RW_L (Device 2 and 3 

Function 0)

RW (Device 0 Function 0, 

Device 2 and 3 Function 1-3)

0x0

c:

Applies only to root ports. Determines when the 

component redirects peer-to-peer Completions 

upstream; applicable only to Read Completions whose 

Relaxed Ordering Attribute is clear.

2:2

RW_L (Device 2 and 3 

Function 0)

RW (Device 0 Function 0, 

Device 2 and 3 Function 1-3)

0x0

r:

When this bit is set, transactions arriving from a root 

port that target the same port back down, will be 

forwarded. Normally such traffic would be aborted. 

Applies only to root ports.

1:1

RW_L (Device 2 and 3 

Function 0)

RW (Device 0 Function 0, 

Device 2 and 3 Function 1-3)

0x0

b:

Applies only to root ports. When set, the component 

blocks all upstream Memory Requests whose Address 

Translation AT field is not set to the default value.