Datasheet
Datasheet, Volume 2 91
Processor Integrated I/O (IIO) Configuration Registers
3.2.4.64 XPREUT_HDR_EXT—REUT PCIe* Header Extended Register
3.2.4.65 XPREUT_HDR_CAP—REUT Header Capability Register
XPREUT_HDR_EXT
Bus: 0 Device: 0 Function: 0 Offset: 100h
Bus: 0 Device: 1 Function: 0–1 Offset: 100
Bus: 0 Device: 2 Function: 0–3 Offset: 100
Bus: 0 Device: 3 Function: 0–3 Offset: 100
Bit Attr
Reset
Value
Description
31:20 RO 110h
PcieNextPtr
Next Capability Pointer This field contains the offset to the next PCI capability
structure or 00h if no other items exist in the linked list of capabilities.
In DMI Mode, it points to the Vendor Specific Error Capability.
In PCIe Mode, it points to the ACS Capability.
19:16 RO 1h
PcieCapVersion: Capability Version
This field is a PCI-SIG defined version number that indicates the nature and
format of the extended capability. This indicates the version of the REUT
Capability.
15:0 RO Bh
PcieCapID: PCIe Extended CapID
This field has the value 0Bh to identify the CAP_ID assigned by the PCI SIG
indicating a vendor specific capability.
XPREUT_HDR_CAP
Bus: 0 Device: 0 Function: 0 Offset: 104h
Bus: 0 Device: 1 Function: 0–1 Offset: 104h
Bus: 0 Device: 2 Function: 0–3 Offset: 104h
Bus: 0 Device: 3 Function: 0–3 Offset: 104h
Bit Attr
Reset
Value
Description
31:20 RO Ch
VSECLength: VSEC Length
This field defines the length of the REUT ‘capability body’. The size of the leaf body
is 12 bytes including the _EXT, _CAP and _LEF registers.
19:16 RO 0h
VSECIDRev: REUT VSECID Rev
This field is defined as the version number that indicates the nature and format of
the VSEC structure. Software must quality the Vendor ID before interpreting this
field.
15:0 RO 0002h
VSECID: REUT Engine VSECID
This field is a Intel-defined ID number that indicates the nature and format of the
VSEC structure. Software must qualify the Vendor ID before interpreting this field.
Notes:
A value of ‘00h’ is reserved
A value of ‘01h’ is the ID Council defined for REUT engines.
A value of ‘02h’ is specified for the REUT ‘leaf’ capability structure which resides in
each link which in supported by a REUT engine.