82870P2P64H2 Datasheet, PDF (155/217 Pages) –

Functional Description
R
4.4.4 Configuration Addressing
Figure 4 and Table 48 show how the P64H2 appears to configuration software.
Figure 4. Intel P64H2 Appearance to Software
Hub Interface
Logical PCI Bus
I/Ox APIC
P-2-P
Bridge A
Hot Plug
Hot Plug
P-2-P
Bridge B
I/Ox APIC
Physical PCI Bus
Physical PCI Bus
P64H2_SW _view
Table 48. PCI Functions/Devices Table
Function
Hub Interface ID
PCI Bus A
0
PCI Bus B
1
I/OxAPIC A
0 (master writes only)
I/OxAPIC B
Hot Plug Controller A
Hot Plug Controller B
1 (master writes only)
None (no master cycles)
None (no master cycles)
PCI Bus
0 (Hub
Interface)
0 (Hub
Interface)
0 (Hub
Interface)
0 (Hub
Interface)
1 (PCI A)
1 (PCI B)
PCI
Device
31 (1Fh)
29 (1Dh)
30 (1Eh)
28 (1Ch)
31 (1Fh)
31 (1Fh)
PCI
Function
0
0
0
0
0
0
Note that the SMBus controller does not appear to software. This function does not have a space
visible to software. The devices are organized such that the bridge and APIC are 1 bit apart in their
device number.
Intel^® 82870P2 P64H2 Datasheet
155