Intel E7-8891 v2 CM8063601377422 用户手册

Intel

®

 Xeon

® 

Processor E7-2800/4800/8800 v2 Product Family

77

Datasheet Volume Two: Functional Description, February 2014

Configuration reads to unimplemented functions and devices will return all ones 
emulating a master abort response. Note that there is no asynchronous error reporting 
that happens when a configuration read master aborts. Configuration writes to 
unimplemented functions and devices will return a normal response. 

Software should not attempt or rely on reads or writes to unimplemented registers or 
register bits. Unimplemented registers should return all zeroes when read. Writes to 
unimplemented registers are ignored. For configuration writes to these register (require 
a completion), the completion is returned with a normal completion status (not master-
aborted).

The Intel® Xeon® Processor E7-2800/4800/8800 v2 Product Family provides a 
mechanism by which various PCI devices or functions within the unit can be hidden 
from the host configuration software i.e. all PCI configuration accesses to the devices’ 
configuration space from Intel

®

QPI will be master aborted. This mechanism is needed 

in cases where a device or function is not used or is available for use, because either 
the device is turned off or the device is not serving any meaningful purpose in a given 
platform configuration. 

This hiding mechanism is implemented via the DEVHIDE register:

Integrated Memory Controller 1

EB0h, 

EB1h,
EB4h,
EB5h

30

0, 
1, 
4, 
5

Channel 2 Thermal Control,
Channel 3 Thermal Control, 
Channel 0 Thermal Control,
Channel 1 Thermal Control

Integrated Memory Controller 

EF8h,
EF9h,
EFAh,
EFBh,
EFCh,
EFDh

17

0,
1,
2,
3,
4,
5

SMI2 (VMSE) 1 Normal
SMI2 (VMSE) 1 EXT
SMI2 (VMSE) MCAST 0+1 Normal
SMI2 (VMSE) MCAST 0+1 EXT
SMI2 (VMSE) 0 Normal
SMI2 (VMSE) 0 EXT

Integrated Memory Controller 

ED8h,
ED8h,
EDCh,
EDDh,
EDEh,
EDFh

31

0,
1,
4,
5,
6,
7

SMI2 (VMSE) 3 Normal
SMI2 (VMSE) 3 EXT
SMI2 (VMSE) 2 Normal
SMI2 (VMSE) 2 EXT
SMI2 (VMSE) MCAST 2+3 Normal
SMI2 (VMSE) MCAST 2+3 EXT

R2PCIe

E1Dh

19

0

Processor Ring to PCIE

R2PCIe

E74h,
E75h

20

2,
3

R2PCIE 

R2PCIe

E34h

19

1

Processor Ring to PCIE Performance 

Monitoring

R3 Intel

®

QPI Link 0 & 1 

Performance

E36h,
E37h

19

5,
6

Intel

®

QPI 0 & 1 Ring Performance 

Monitoring

R3 Intel

®

QPI Link 2 Performance

E3Eh,
E3Fh

18

5,
6

Intel

®

QPI 2 Ring Performance 

Monitoring

R3 Intel

®

QPI 0 & 1

E81h

19

4

Intel

®

QPI 0 & 1 Ring Registers

R3 Intel

®

QPI 2

E41h

18

4

Intel

®

QPI 2 Ring Registers