Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
ID | Date | Version | Classification |
---|---|---|---|
615146 | 08/09/2019 | 1.2 | Public |
ACS Control Register (ACSCTLR) – Offset 148
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
30:7 | - | - | Reserved
|
6 | 0b | RO | ACS Direct Translated P2P Enable (T) ACS Direct Translated P2P Enable (T): ACS Direct Translated P2P is not supported. |
5 | 0b | RO | ACS P2P Egress Control Enable (E) ACS P2P Egress Control Enable (E): ACS P2P Egress Control is not supported. |
4 | 0b | RO | ACS Upstream Forwarding Enable (U) ACS Upstream Forwarding Enable (U): ACS Upstream Forwarding is not supported. |
3 | 0b | RW | ACS P2P Completion Redirect (C) ACS P2P Completion Redirect (C): Determines when the component redirects peer-to-peer Completions upstream; applicable only to Read Completions whose Relaxed Ordering Attribute is clear. |
2 | 0b | RW | ACS P2P Request Redirect (R) ACS P2P Request Redirect (R): Determines when the component redirects peer-to-peer memory Requests targeting another peer port upstream. |
1 | 0b | RW | ACS Translation Blocking (B) ACS Translation Blocking (B): When set, the component blocks all upstream Memory Requests whose Address Translation (AT) field is not set to the default value. |
0 | 0b | RW | ACS Source Validation (V) ACS Source Validation (V): When set, the component validates the Bus Number from the Requester ID of upstream Requests against the secondary / subordinate Bus Numbers. |