Datasheet

Intel
®
Xeon
®
Processor E7-2800/4800/8800 v2 Product Family 459
Datasheet Volume Two: Functional Description, February 2014
Integrated I/O (IIO) Configuration Registers
95:90 ROS_V 0x0
Reg[5:0]:
Register Number.
This field is valid for configuration requests only.
89:84 RV - Reserved.
83:80 ROS_V 0x0
ExtReg[3:0]:
Extended Register Number.
This field is valid for configuration requests only.
79:64 ROS_V 0x0
RouteID[15:0]:
ID Routing Fields.
This field is valid for configuration requests only. This contains information
to route the packet to the target and is comprised as follows:
{device[4:0], function[2:0], bus[7:0]}
63:60 ROS_V 0x0
Last_DW_BE[3:0]:
Last DW Byte Enables.
This field is valid for memory, I/O, and configuration requests only. The
value in this field is set to all 0’s for I/O and configuration requests.
59:56 ROS_V 0x0
1st_DW_BE[3:0]:
First DW Byte Enables.
This field is valid for memory, I/O and configuration requests only.
55:48 ROS_V 0x0
Tag[7:0]:
Tag.
This field is valid for memory, I/O and configuration requests only. This
field in combination with the Requester ID field form a unique Transaction
ID. The value from the original request must be preserved into the
completion.
47:32 ROS_V 0x0
ReqID[15:0]:
Requester ID.
This field is located here only for memory, configuration, I/O, and
message requests. This field is located elsewhere for completions. This
field in combination with the Tag field form a unique Transaction ID. The
Requester ID is comprised as follows: {device[4:0], function[2:0],
bus[7:0]}. The value from the original request must be preserved into the
completion.
31:31 ROS_V 0x0
TD:
TLP Digest.
A value of “1” in this field indicates the presence of a single DW TLP digest
at the end of the packet for use in ECRC protection as defined by the
PCIe* specification.
Note: Intel Xeon processor E7-2800/4800/8800 v2 product family Product
Family IIO does not support ECRC generation/checking so the switch does
not store/forward ECRC.
30:30 ROS_V 0x0
EP:
Error Poisoned.
This field is used to indicate that the data payload contained in the packet
is poisoned.
Type: CFG PortID: N/A
Bus: 0 Device: 5Function:2
Offset: IRPP0: 0x240, Size: 128 bits
IRPP1: 0x2c0
Bit Attr Default Description