Vtpolicy-Dma Remap Engine Policy Control Register - Intel 2ND GENERATION CORE PROCESSOR FAMILY DESKTOP - DATASHEET VOLUME 2 01-2011 Datasheet

Processor Configuration Registers
2.18.31 VTPOLICY—DMA Remap Engine Policy Control Register
This register contains all the policy bits related to the DMA remap engine.
B/D/F/Type:
Address Offset:
Reset Value:
Access:
Size:
BIOS Optimal Default
Bit
31
30:0
Datasheet, Volume 2
0/0/0/GFXVTBAR
FF0–FF3h
00000000h
RO, RO-KFW, RW-KL, RW-L
32 bits
0000h
Reset RST/
Attr
Value PWR
RW-KL 0b Uncore
RO 0h
Description
DMA Remap Engine Policy Lock-Down (DMAR_LCKDN)
This bit protects all the DMA remap engine specific policy
configuration registers. Once this bit is set by software all the DMA
remap engine registers within the range F00h to FFCh will be read
only. This bit can only be cleared through platform reset.
Reserved
249