AC82G41SLGQ3 Datasheet, PDF (468/604 Pages) Intel Corporation – Intel® 4 Series Chipset Family

Intel^® Virtualization Technology for Directed I/O Registers (D0:F0) (Intel^® 82Q45 GMCH Only)
12.2.6
RTADDR_REG—Root-Entry Table Address Register
B/D/F/Type:
Address Offset:
Default Value:
Access:
Size:
0/0/0/DMIVC1REMAP
20-27h
0000000000000000h
R/W, RO
64 bits
This register provides the base address of root-entry table.
Bit
63:12
11:0
Access
R/W
RO
Default
Value
000000000
0000h
000h
RST/PWR
Description
Core
Core
Root table address (RTA): This field points to the base
of page aligned, 4 KB-sized root-entry table in system
memory. Hardware may ignore and not implement bits
63:HAW, where HAW is the host address width.
Software specifies the base address of the root-entry table
through this register, and programs it in hardware through
the SRTP field in the Global Command register.
Reads of this register returns value that was last
programmed to it.
Reserved
468
Datasheet