Intel E7-8891 v2 CM8063601377422 User Manual

Product codes
CM8063601377422
Page of 504
Intel
®
 Xeon
® 
Processor E7-2800/4800/8800 v2 Product Family
249
Datasheet Volume Two: Functional Description, February 2014
Integrated I/O (IIO) Configuration Registers
14.2.66 ACSCTRL
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. 
Type:
CFG
PortID:
N/A
Bus:
0
Device:
0Function:0 (PCIe* mode)
Bus:
0
Device:
2Function:0-3
Bus:
0
Device:
3Function:0-3
Offset:
0x114
Bit
Attr
Default
Description
Type:
CFG
PortID:
N/A
Bus:
0
Device:
0Function:0 (PCIe* Mode)
Bus:
0
Device:
2Function:0-3
Bus:
0
Device:
3Function:0-3
Offset:
0x116
Bit
Attr
Default
Description
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.
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