Datasheet

Datasheet 37
System Address Map
NOTE: Do not follow the EP UMA requirement.
Figure 3. System Address Ranges
Main
Memory
A
ddress
Range
Main
Memory
A
ddress
Range
4G
Main
Memory Reclaim
A
ddress
Range
64G
RECLAIM BASE
RECLAIM LIMIT =
RECLAIM BASE +
x
OS
VISIBLE
< 4 GB
PCI
Memory
A
ddress
Range
(subtractively
decoded to
DMI)
OS
INVISIBLE
RECLAIM
OS
VISIBLE
> 4 GB
STOLEN
(
0 - 256 MB )
EP - UM
A
( 1 - 64 MB )
TOM
HOST/SYSTEM VIE
W
PHYSICAL MEMOR
Y
(DRAM CONTROLLER VIE
W
)
TSEG
TSEG
( 0 - 8 MB )
X
0
0
PCI
Memory
A
ddress
Range
(subtractively
decoded to
DMI)
TSEG BASE
EP Stolen BASE
1 MB aligned
1
MB aligned
64
MB aligned
1
MB aligned
64MB aligned
64MB aligned
64
MB aligned for reclaim
0 MB -
63 MB
Wasted
64 MB aligned
TOLUD BASE
64MB aligned
TOUUD BASE
Legacy
A
ddress
Range
1MB
Independently Programmable
Non
-
Overlappin
g
Windows
Device 0
Bars
( PXPEPBAR ,
MCHBAR ,
PCIEXBAR ,
DMIBAR
)
Device 1
Bars
(
MBASE 1
/
MLIMIT 1 ,
PMBASE 1 /
PMLIMIT 1 )
Device0
(Stolen
Memory
)
Device 3
( EPHECIBAR ,
EPHECI
2 BAR
, EPKTBAR )
Independentl
y
Pro
g
rammable
Non
- Overlapping Windows
Device 0
Bars
( PXPEPBAR ,
MCHBAR ,
PCIEXBAR ,
DMIBAR
)
Device 1
Bars
( PMUBASE 1 /
PMULIMIT 1 )
Dev i ce 3
( EPHECIBAR ,
EPHECI
2 BAR )
MC HBA
R
(
GFXVTBA
R
,
DMIVC
1 BAR ,
VTMEBA
R
,
VTDPVC
0 BAR )
Stolen BASE
Device 6
Bars
(
MBASE 1
/
MLIMIT 1 ,
PMBASE 1
/
PMLIMIT 1
)