Datasheet
Datasheet, Volume 2 123
Processor Integrated I/O (IIO) Configuration Registers
3.4.4.23 GMMIOH.BASEU—Global MMIOH Base Upper
3.4.4.24 GMMIOH.LIMITU—Global MMIOH Limit Upper
3.4.4.25 GCFGBUS.BASE—Global Configuration Bus Number Base Register
Register: GMMIOH.BASEU
Device: 8
Function: 0
Offset: 12Ch
Bit Attr Default Description
31:19 RO 0h
This field corresponds to address A[63:51] of the global MMIOH range and is
always 0.
18:0 RW 0h
Global MMIOH Base Upper Address
This field corresponds to A[50:32] of global MMIOH base. An inbound or
outbound memory address that satisfies ‘global MMIOH base
upper[31:0]::global MMIOH base[15:10] ≤ A[63:26] ≤ global MMIOH limit
upper[31:0]::global MMIOH limit[15:10]’ but is outside of the local MMIOH
range is treated as a remote peer-to-peer transaction over Intel
QuickPath
Interconnect link.
Setting GMMIOH.BASEU::GMMIOH.BASE greater than
GMMIOH.LIMITU::GMMIOH.LIMIT disables global MMIOH peer-to-peer.
This register is programmed once at boot time and does not change after that.
Register: GMMIOH.LIMITU
Device: 8
Function: 0
Offset: 130h
Bit Attr Default Description
31:19 RO 0h
This field corresponds to address A[63:51] of the global MMIOH range and is
always 0.
18:0 RW 0h
Global MMIOH Limit Upper Address
This field corresponds to A[51:32] of global MMIOH limit. An inbound or
outbound memory address that satisfies ‘global MMIOH base
upper[31:0]::global MMIOH base[15:10] ≤ A[63:26] ≤ global MMIOH limit
upper[31:0]::global MMIOH limit[15:10]’ but is outside of the local MMIOH
range is treated as a remote peer-to-peer transaction over Intel
QuickPath
Interconnect link.
Setting GMMIOH.BASEU::GMMIOH.BASE greater than
GMMIOH.LIMITU::GMMIOH.LIMIT disables global MMIOH peer-to-peer.
This register is programmed once at boot time and does not change after that.
Register: GCFGBUS.BASE
Device: 8
Function: 0
Offset: 134h
Bit Attr Default Description
7:0 RW 0h
Global Configuration Bus Number Base
This field corresponds to base bus number of bus number range that spans all
IIOs in a partition. An inbound or outbound configuration tx that satisfies
‘Global Bus Number Base [7:0] ≤ Bus Number[7:0] ≤ Global Bus Number Limit
[7:0]’ but is outside of the local bus number range is treated as a remote
peer-to-peer transaction over Intel
QuickPath Interconnect link.