Intel® Core™ Ultra 200H and 200U Series Processors CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 844345 | 01/29/2025 | 001 | Public |
ARI Capability (ARI_CAP_0_2_0_PCI) – Offset 104
ARI capability reports support for Alternative Routing ID (ARI) on Gfx device, compliant to PCI-Express ARI ECN.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 15:8 | 0h | RO | NEXT FUNCTION NUMBER (NFN) Hardwired to 0 as there is only one PF in the device. VFs have their own NFN and stride mechanism. |
| 7:2 | 0h | RO | Reserved |
| 1 | 0h | RO | ACS FUNCTION GROUPS CAPABILITY (A) (ACS_GRP) Hardwired to 0. Applicable only for Function 0; must be 0b for all other functions. If 1b, indicates that the ARI device supports Function Group level granularity for ACS P2P Egress Control via its ACS Capability Structures. |
| 0 | 0h | RO | MFVC FUNCTION GROUPS CAPABILITY (M) (MFVC_GRP) Hardwired to 0. Applicable only for Function 0; must be 0b for all other functions. If 1b, indicates that the ARI Device supports Function Group level arbitration via its Multi-function Virtual Channel (MFVC) Capability structure. |