Intel B940 Datasheet Page 237

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Datasheet, Volume 2 237
Processor Configuration Registers
2.16.12 FEUADDR_REG—Fault Event Upper Address Register
This register specifies the interrupt message upper address. The register is treated as
reserved by implementations reporting Extended Interrupt Mode (EIM) as not
supported in the Extended Capability register.
2.16.13 AFLOG_REG—Advanced Fault Log Register
This register specifies the base address of the memory-resident fault-log region. The
register is treated as reserved for implementations not supporting advanced translation
fault logging (AFL field reported as 0 in the Capability register).
B/D/F/Type: 0/0/0/DMIVC1REMAP
Address Offset: 44–47h
Reset Value: 00000000h
Access: RO
Bit Attr
Reset
Value
Description
31:0 RO
00000000
h
Message Upper Address (MUA)
Hardware implementations supporting Extended Interrupt Mode are required
to implement this register.
Software requirements for programming this register are described in the
VTd specification.
Hardware implementations not supporting Extended Interrupt Mode may
treat this field as reserved.
B/D/F/Type: 0/0/0/DMIVC1REMAP
Address Offset: 58–5Fh
Reset Value: 0000000000000000h
Access: RO
Bit Attr
Reset
Value
Description
63:12 RO
00000000
00000h
Fault Log Address (FLA)
This field specifies the base of 4KB aligned fault-log region in system
memory. Hardware may ignore and not implement bits 63:HAW, where HAW
is the host address width.
Software specifies the base address and size of the fault log region through
this register, and programs it in hardware through the SFL field in the Global
Command register.
When implemented, reads of this field returns value that was last
programmed to it.
11:9 RO 000b
Fault Log Size (FLS)
This field specifies the size of the fault log region pointed by the FLA field.
The size of the fault log region is (2^X) * 4KB, where X is the value
programmed in this register.
000 = 4 KB
001 = 8 KB
010 = 16 KB
011 = 32 KB
100 = 64 KB
101 = 128 KB
110 = 256 KB
111 = 512 KB
When implemented, reads of this field returns value that was last
programmed to it.
8:0 RO 000h Reserved
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