Intel E7-8891 v2 CM8063601377422 Benutzerhandbuch

Intel

®

 Xeon

® 

Processor E7-2800/4800/8800 v2 Product Family

261

Datasheet Volume Two: Functional Description, February 2014

MISC Control and Status Register 0.

31:31

RW

0x0

disable_l0s_on_transmitter:

When set, IIO never puts its tx in L0s state, even if OS 

enables it via the Link Control register.

30:30

RW_O

0x1

inbound_io_disable:

29:29

RW

0x1

cfg_to_en:

Disables/enables config timeouts, independently of other 

timeouts.

28:28

RW

0x0

to_dis:

Disables timeouts completely. 

27:27

RWS

0x0

system_interrupt_only_on_link_bw_management_status:

This bit, when set, will disable generating MSI and Intx 

interrupts on link bandwidth (speed and/or width) and 

management changes, even if MSI or INTx is enabled that 

is, will disable generating MSI or INTx when LNKSTS bits 15 

and 14 are set. Whether or not this condition results in a 

system event like SMI/PMI/CPEI is dependent on whether 

this event masked or not in the XPCORERRMSK register.

26:26

RW_LV (Device 2 and 3 

Function 0)

RW (Device 0 Function 0, 

Device 2 and 3 Function 1-

3)

0x0

eoifd:

EOI Forwarding Disable - Disable EOI broadcast to this 

PCIe* link  
When set, EOI message will not be broadcast down this 

PCIe* link. When clear, the port is a valid target for EOI 

broadcast.

25:25

RV

-

Reserved.

24:24

RW

0x0

peer2peer_memory_read_disable:

When set, peer-to-peer memory reads are master aborted 

otherwise they are allowed to progress per the peer-to-peer 

decoding rules.

23:23

RW

0x0

phold_disable:

Applies only to Dev#0When set, the IIO responds with 

Unsupported request on receiving assert_phold message 

from ICH and results in generating a fatal error.

22:22

RWS

0x0

check_cpl_tc:

21:21

RW_O

0x0

zero_ob_tc:

Forces the TC field to zero for outbound requests.
1: TC is forced to zero on all outbound transactions 

regardless of the source TC value
0: TC is not altered
Note:
In DMI mode, TC is always forced to zero and this bit has 

no effect.