Intel E7-8891 v2 CM8063601377422 User Manual

Product codes
CM8063601377422
Page of 504
Integrated I/O (IIO) Configuration Registers
412
Intel
®
 Xeon
® 
Processor E7-2800/4800/8800 v2 Product Family
Datasheet Volume Two: Functional Description, February 2014
14.7.14 VTD[0:1]_PROT_LOW_MEM_BASE
Intel
®
VT-d Protected Memory Low Base.
14.7.15 VTD[0:1]_PROT_LOW_MEM_LIMIT
Intel
®
VT-d Protected Memory Low Limit.
14.7.16 VTD[0:1]_PROT_HIGH_MEM_BASE
Intel
®
VT-d Protected Memory High Base.
Type:
MEM
PortID:
8’h7e
Bus:
0
Device:
5Function:0
Offset:
0x68
, 0x1068
Bit
Attr
Default
Description
31:21
RW
0x0
addr:
16 MB aligned base address of the low protected DRAM region
Note that Intel
®
VT-d engine generated reads/writes (page walk, interrupt 
queue, invalidation queue read, invalidation status) themselves are allowed 
toward this region, but no DMA accesses (non-translated DMA or ATS 
translated DMA or pass through DMA, that is, no DMA access of any kind) 
from any device is allowed toward this region (regardless of whether TE is 0 
or 1), when enabled. 
20:0
RV
-
Reserved.
Type:
MEM
PortID:
8’h7e
Bus:
0
Device:
5Function:0
Offset:
0x6c, 0x106c
Bit
Attr
Default
Description
31:21
RW
0x0
addr:
16 MB aligned limit address of the low protected DRAM region
Note that Intel
®
VT-d engine generated reads/writes (page walk, interrupt 
queue, invalidation queue read, invalidation status) themselves are allowed 
toward this region, but no DMA accesses (non-translated DMA or ATS 
translated DMA or pass through DMA, that is, no DMA access of any kind) 
from any device is allowed toward this region (regardless of whether TE is 0 
or 1), when enabled.
20:0
RV
-
Reserved.
Type:
MEM
PortID:
8’h7e
Bus:
0
Device:
5Function:0
Offset:
0x70
, 0x1070
Bit
Attr
Default
Description
63:21
RW
0x0
addr:
16 MB aligned base address of the high protected DRAM region
Note that Intel
®
VT-d engine generated reads/writes (page walk, interrupt 
queue, invalidation queue read, invalidation status) themselves are allowed 
toward this region, but no DMA accesses (non-translated DMA or ATS 
translated DMA or pass through DMA, that is, no DMA access of any kind) 
from any device is allowed toward this region (regardless of whether TE is 0 
or 1), when enabled. 
20:0
RV
-
Reserved.
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