DELL 2 x Intel Xeon E7-4860 338-BFMX User Manual
Product codes
338-BFMX
Address Map
18
Datasheet Volume 2 of 2
3.1.2
I/O Decoder Map
shows the I/O decoder address map. Given for each region are the name, the
pattern for address bits [31:14], the size in bytes, the memory attribute, the number
of targets in the target list, the address bits used to index the target list (if any), which
CSR is used to enable the entry, and the location (decoder and entry number). For all
regions which specify an address pattern, address bits [43:32] must be zero to match,
except those marked with "*". Also, any address in the 4 GB – 64 MB...4 GB range will
be forced to mismatch any region, except for those fixed to that range. In other words,
any address in this range which would otherwise match the MMIOL1 entry or a DRAM
decoder entry is forced to mismatch. The CFG entries are not allowed to overlap the 4
GB – 64 MB...4 GB range.
of targets in the target list, the address bits used to index the target list (if any), which
CSR is used to enable the entry, and the location (decoder and entry number). For all
regions which specify an address pattern, address bits [43:32] must be zero to match,
except those marked with "*". Also, any address in the 4 GB – 64 MB...4 GB range will
be forced to mismatch any region, except for those fixed to that range. In other words,
any address in this range which would otherwise match the MMIOL1 entry or a DRAM
decoder entry is forced to mismatch. The CFG entries are not allowed to overlap the 4
GB – 64 MB...4 GB range.
Table 3-3.
I/O Decoder Entries (Sheet 1 of 2)
Name
Addr[31:14]
Size
Attr
Tgts
Index
Enable
Entry
CFG
aaaa_xxxx_xxxx_xxxx_xx
256 MB
CFG
8
[27:25]
IOMMEN
IOL0
CFG-SCA
aaaa_bbbb_bccc_xxxx_xx
8 MB
CFG
8
[22:20]
IOMMEN
IOS0
MMIOL0
dddd_xxxx_xxxx_xxxx_xx
2 GB
MMIO
8
[30:28]
IOMMEN
IOL1
MMIOL1
eeee_xxxx_xxxx_xxxx_xx
2 GB
MMIO
8
[30:28]
IOMMEN
IOL2
VGA
0000_0000_0000_101x_xx
128 KB
MMIO
1
N/A
CSEGEN
IOS1
BIOS
0000_0000_0000_11ff_ff
256 KB
MMIO
1
N/A
BIOSEN
IOS8
CPU Cfg
1111_1100_xxxx_xxxx_xx *
16 MB
MMIO
8
[23:21]
IOVLD
IOL3
Local clump
CPU Cfg
1111_1100_bccc_bbbb_xx *
512KB
1
MMIO
8
[22:20]
IOMMEN
IOVLD
IOS9
IOH Cfg
1111_1101_xxxx_xxxx _xx *
16 MB
MMIO
8
[23:21]
IOVLD
IOL4
Local Config.
1111_1110_1011_xxxx_xx *
1 MB
MMIO
1
N/A
always
IOS3
IOAPIC
1111_1110_1100_xxxx_xx
1 MB
MMIO
8
[15:13]
IOVLD
IOL5
ICH
1111_1110_1101_xxxx_xx
1 MB
MMIO
1
N/A
IOVLD
IOS2
FWH
1111_1111_xxxx_xxxx_xx
16 MB
MMIO
8
[23:21]
IOVLD
IOL6
Legacy I/O
0000_0000_0000_0000_xx +
64 KB
IO
8
[15:13]
IOVLD
IOL7
CFG
1000_xxxx_xxxx_xxxx_xx +
256 MB
CFG
8
[27:25]
IOVLD
IOL0
CFG-SCA
1000_bbbb_bccc_xxxx_xx +
8 MB
CFG
8
[22:20]
IOMMEN
IOS0
Used for LT
match
1111_1110_1101_xxxx_xx +
1-4 Byte, 8
Byte (IO
access)
64 Byte (Mem
64 Byte (Mem
type access)
LT
Leg
IOH
N/A
always
IOS10
LT Doorbell
0xFED20EXX
1-4 Byte
8 Byte
8 Byte
LT
Leg
IOH
N/A
always
IOS11
IntA
N/A
N/A
N/A
1
N/A
always
IOS5
Lock
N/A
N/A
N/A
1
N/A
always
IOS6
SplitLock
N/A
N/A
N/A
1
N/A
always
IOS6
Unlock
N/A
N/A
N/A
1
N/A
always
IOS6
Shutdown
N/A
N/A
N/A
1
N/A
always
IOS5
Invd_Ack
N/A
N/A
N/A
1
N/A
always
IOS6
WbInvd_Ack
N/A
N/A
N/A
1
N/A
always
IOS6
RSVD_Debug
N/A
N/A
N/A
1
N/A
always
IOS7
DbgWr
N/A
N/A
N/A
1
N/A
always
IOS7
IntPriUp
N/A
N/A
N/A
1
N/A
always
IOS6