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326769-002 参数 Datasheet PDF下载

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型号: 326769-002
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内容描述: 移动第三代英特尔®科雷亚?? ¢处理器家族 [Mobile 3rd Generation Intel® Core™ Processor Family]
分类和应用:
文件页数/大小: 342 页 / 2513 K
品牌: INTEL [ INTEL ]
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Processor Configuration Registers  
2.18.7  
CCMD_REG—Context Command Register  
This register manages context cache. The act of writing the uppermost byte of the  
CCMD_REG with the ICC field set causes the hardware to perform the context-cache  
invalidation.  
B/D/F/Type:  
Address Offset:  
Reset Value:  
Access:  
0/0/0/GFXVTBAR  
28–2Fh  
0800000000000000h  
RW, RW-V, RO-V  
64 bits  
Size:  
BIOS Optimal Default  
000000000h  
Reset  
Value  
RST/  
PWR  
Bit  
Access  
Description  
Invalidate Context-Cache (ICC)  
Software requests invalidation of context-cache by setting this  
field. Software must also set the requested invalidation  
granularity by programming the CIRG field. Software must read  
back and check the ICC field is Clear to confirm the invalidation is  
complete. Software must not update this register when this field  
is set.  
Hardware clears the ICC field to indicate the invalidation request  
is complete. Hardware also indicates the granularity at which the  
invalidation operation was performed through the CAIG field.  
63  
RW-V  
0h  
Uncore  
Software must submit a context-cache invalidation request  
through this field only when there are no invalidation requests  
pending at this remapping hardware unit.  
Since information from the context-cache may be used by  
hardware to tag IOTLB entries, software must perform domain-  
selective (or global) invalidation of IOTLB after the context cache  
invalidation has completed.  
Hardware implementations reporting write-buffer flushing  
requirement (RWBF=1 in Capability register) must implicitly  
perform a write buffer flush before invalidating the context  
cache.  
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.  
62:61  
RW  
0h  
Uncore  
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.  
Datasheet, Volume 2  
273