AC82G41SLGQ3 Datasheet, PDF (440/604 Pages) Intel Corporation – Intel® 4 Series Chipset Family

Intel^® Virtualization Technology for Directed I/O Registers (D0:F0) (Intel^® 82Q45 GMCH Only)
Bit
62:61
60:59
58:34
Access
R/W
RO
RO
Default
Value
RST/PWR
Description
0h
0h
000000000h
Core
Core
Core
Context Invalidation Request Granularity (CIRG):
Software provides the requested invalidation granularity
through this field when setting the ICC field.
00 = Reserved.
01 = Global Invalidation request.
10 = Domain-selective invalidation request. The target
domain-ID must be specified in the DID field.
11 = Device-selective invalidation request.
The target source-ID(s) must be specified through the SID
and FM fields, and the domain-ID (that was programmed
in the context-entry for these device(s)) must be provided
in the DID field.
Hardware implementations may process an invalidation
request by performing invalidation at a coarser granularity
than requested. Hardware indicates completion of the
invalidation request by clearing the ICC field. At this time,
hardware also indicates the granularity at which the actual
invalidation was performed through the CAIG field.
Context Actual Invalidation Granularity (CAIG):
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).
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.
Reserved
440
Datasheet