Intel E7-8891 v2 CM8063601377422 Manuel D’Utilisation

Codes de produits

CM8063601377422

Integrated I/O (IIO) Configuration Registers

364

Intel

Xeon

Processor E7-2800/4800/8800 v2 Product Family

Datasheet Volume Two: Functional Description, February 2014

14.6.22 GENPROTRANGE[1:0]_LIMIT

Generic Protected Memory Range X Limit Address. (X = 1, 0)

14.6.23 GENPROTRANGE2_BASE

Generic Protected Memory Range 2 Base Address.

14.6.24 GENPROTRANGE2_LIMIT

Generic Protected Memory Range 2 Limit Address.

Type:

CFG

PortID:

N/A

Bus:

Device:

5Function:0

Offset:

0xb8

, 0x128

Bit

Attr

Default

Description

63:51

rsvd:

50:16

RW_LB

0x0

limit_address:

[50:16] of generic memory address range that needs to be protected from

inbound dma accesses. The protected memory range can be anywhere in

the memory space addressable by the processor. Addresses that fall in this

range that is, GenProtRange.Base[63:16] <= Address [63:16] <=

GenProtRange.Limit [63:16], are completer aborted by IIO.
Setting the Protected range base address greater than the limit address

disables the protected memory region.
Note that this range is orthogonal to Intel

VT-d spec defined protected

address range. This register is programmed once at boot time and does not

change after that, including any quiesce flows. Since this register provides

for a generic range, it can be used to protect any system dram region from

DMA accesses. The expected usage for this range is to abort all PCIe*

accesses to the PCI-Segments region.

15:0

0x0