Datasheet

Intel
®
E8870 Scalable Node Controller (SNC) Datasheet 4-17
System Address Map
0B_0000h to 0B_7FFFh
and (MDA_en = 0) and
(VGA_port = none)
DRAM DRAM Route to SPS, Attr=DRAM. Route to SNC according to MIR
registers. Apply Coherence
Protocol.
0C_0000h to 0F_FFFFh DRAM DRAM Issue Coherent Request to SP. Route to SNC according to MIR
registers. Apply Coherence
Protocol.
10_0000h to MMIOBL DRAM DRAM Issue Coherent Request to SP. Route to SNC according to MIR
registers. Apply Coherence
Protocol.
10_0000h to MMIOBL Unclaimed Unclaimed Master Abort. N/A
(MMIOBL< Address <=
MMIOLL) AND NOT
(MMIOSL[5] < ADDRESS
<= MMIOSL[0])
Peer-peer
to remote
SIOH
Unclaimed Reads: Master Abort.
Writes: Route to SP, Attr = MMIO.
Route to SIOH according to
MMIOLS.
MMIOSL[5] < ADDRESS
<= MMIOSL[0]
Peer-peer
to local
SIOH
Unclaimed Reads: Master Abort.
Writes: Route to correct HI based
on MMIO and SAPIC range
registers.
N/A
FEC0_0000h to
FECF_FFFFh
Peer write
to SAR/
HPR range
Unclaimed Reads: Master Abort.
Writes: Route to HI if match with
SAR range, else send to SPS,
Attr=MMIO.
Route to node based on SARS.
FED0_0000h to
FEDF_FFFFh
Unclaimed Unclaimed Master Abort. N/A
FEE0_0000h to
FEEF_FFFFh
Turned into
Interrupt
transaction
on
processor
bus
Unclaimed Reads: Master Abort
Writes: Forward to SP, Attr = INT.
Forward to correct node based
on node ID of register CBC, this
gets turned into an interrupt by
SNC.
FEF0_0000h to
FEFF_FFFFh
Unclaimed Unclaimed Master Abort. N/A
(FF00_0000h to
FFBF_FFFFh) AND CB is
in local SIOH
ICH4 BIOS Unclaimed Reads: Master Abort.
Writes: Attr = CB; send to CB
based on IOCTL.
N/A
(FF00_0000h to
FFBF_FFFFh) AND CB is
in remote SIOH
ICH4 BIOS Unclaimed Reads: Master Abort.
Writes: Route to SP,
Attr = CB.
Route to SIOH node specified by
CB_PORT register.
FFC0_0000h to
FFFF_FFFFh
Illegal Illegal Master Abort. N/A
Above 1_0000_0000h AND
not (MMIOBH < ADDRESS
<= MMOILH)
DRAM DRAM Coherent Request. Route to SNC according to MIR
registers.
MMIOSH[5] < ADDRESS
<= MMIOSH[0]
Peer-peer
to local
SIOH
Unclaimed Reads: Master Abort.
Writes: Route to correct HI based
on MMIOSH[5:0].
N/A
(MMIOBH< Address <=
MMIOLH) AND NOT
(MMIOSH[5] < ADDRESS
<= MMIOSH[0])
Peer-peer
to remote
SIOH
Unclaimed Reads: Master Abort.
Writes: Route to SPS,
Attr = MMIO.
Route to SIOH according to
MMIOHS.
Table 4-8. Address Disposition for Inbound Transactions (Continued)
Address Range
Inbound
Writes
Inbound
Reads
SIOH Behavior for Inbound SPS Behavior