Intel E7-8891 v2 CM8063601377422 User Manual

Product codes
CM8063601377422
Page of 504
Integrated I/O (IIO) Configuration Registers
246
Intel
®
 Xeon
® 
Processor E7-2800/4800/8800 v2 Product Family
Datasheet Volume Two: Functional Description, February 2014
14.2.61 XPREUT_HDR_EXT
REUT PCIe* Header Extended.
1:0
RW
RW_L (Device 0 
Function 0)
0x0
power_state:
This 2-bit field is used to determine the current power state of the 
function and to set a new power state as well. 
00: D0
01: D1 (not supported by IIO)
10: D2 (not supported by IIO)
11: D3hot
If Software tries to write 01 or 10 to this field, the power state 
does not change from the existing power state which is either D0 
or D3hot and nor do these bits1:0 change value.
When in D3hot state, I/OxAPIC will 
a) respond to only Type 0 configuration transactions targeted at 
the device’s configuration space, when in D3hot state
c) will not respond to memory that is, D3hot state is equivalent to 
MSE , accesses to MBAR region note: ABAR region access still go 
through in D3hot state, if it enabled
d) will not generate any MSI writes
Type:
CFG
PortID:
N/A
Bus:
0
Device:
0Function:0
Bus:
0
Device:
2Function:0-3
Bus:
0
Device:
3Function:0-3
Offset:
0xe4
Bit
Attr
Default
Description
Type:
CFG
PortID:
N/A
Bus:
0
Device:
0Function:0
Bus:
0
Device:
2Function:0-3
Bus:
0
Device:
3Function:0-3
Offset:
0x100
Bit
Attr
Default
Description
31:20
RO
RO_V (Device 0 
Function 0)
0x110
pcienextptr:
Next Capability Pointer This field contains the offset to the next PCI 
capability structure or 00h if no other items exist in the linked list of 
capabilities.
In DMI Mode, it points to the Vendor Specific Error Capability.
In PCIe* Mode, it points to the ACS Capability.
19:16
RO
0x1
pciecapversion:
Capability Version: This field is a PCI-SIG defined version number 
that indicates the nature and format of the extended capability. This 
indicates the version of the REUT Capability.
15:0
RO
0xb
pciecapid:
PCIe* Extended CapID: This field has the value 0Bh to identify the 
CAP_ID assigned by the PCI SIG indicating a vendor specific 
capability. 
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