Intel G645 BX80623G645 用户手册
产品代码
BX80623G645
Datasheet, Volume 2
277
Processor Configuration Registers
60:59
RO-V
0h
Uncore
Context Actual Invalidation Granularity (CAIG)
Hardware reports the granularity at which an invalidation request
Hardware reports the granularity at which an invalidation request
was processed through the CAIG field at the time of reporting
invalidation completion (by clearing the ICC field).
The following are the encodings for this field:
00 = Reserved.
01 = Global Invalidation performed. This could be in response to
The following are the encodings for this field:
00 = Reserved.
01 = Global Invalidation performed. This could be in response to
a global, domain-selective or device-selective invalidation
request.
10 = Domain-selective invalidation performed using the domain-
id specified by software in the DID field. This could be in
response to a domain-selective or device-selective
invalidation request.
11 = Device-selective invalidation performed using the source-id
and domain-id specified by software in the SID and FM
fields. This can only be in response to a device-selective
invalidation request.
58:34
RO
0h
Reserved
33:32
RW
0h
Uncore
Function Mask (FM)
Software may use the Function Mask to perform device-selective
Software may use the Function Mask to perform device-selective
invalidations on behalf of devices supporting PCI Express Phantom
Functions.
This field specifies which bits of the function number portion (least
This field specifies which bits of the function number portion (least
significant three bits) of the SID field to mask when performing
device-selective invalidations. The following encodings are defined
for this field:
00 = No bits in the SID field masked.
01 = Mask most significant bit of function number in the SID
00 = No bits in the SID field masked.
01 = Mask most significant bit of function number in the SID
field.
10 = Mask two most significant bit of function number in the SID
field.
11 = Mask all three bits of function number in the SID field.
The context-entries corresponding to all the source-ids specified
The context-entries corresponding to all the source-ids specified
through the FM and SID fields must have to the domain-id
specified in the DID field.
31:16
RW
0000h
Uncore
Source ID (SID)
Indicates the source-id of the device whose corresponding context-
Indicates the source-id of the device whose corresponding context-
entry needs to be selectively invalidated. This field along with the
FM field must be programmed by software for device-selective
invalidation requests.
15:8
RO
0h
Reserved
7:0
RW
00h
Uncore
Domain-ID (DID)
Indicates the id of the domain whose context-entries need to be
Indicates the id of the domain whose context-entries need to be
selectively invalidated. This field must be programmed by software
for both domain-selective and device-selective invalidation
requests.
The Capability register reports the domain-id width supported by
The Capability register reports the domain-id width supported by
hardware. Software must ensure that the value written to this field
is within this limit. Hardware may ignore and not implement
bits15:N, where N is the supported domain-id width reported in the
Capability register.
B/D/F/Type:
0/0/0/VC0PREMAP
Address Offset:
28–2Fh
Reset Value:
0000_0000_0000_0000h
Access:
RW-V, RW, RO-V
Size:
64 bits
BIOS Optimal Default
0_0000_0000h
Bit
Attr
Reset
Value
RST/
PWR
Description