Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
ID | Date | Version | Classification |
---|---|---|---|
615146 | 08/09/2019 | 1.2 | Public |
HBA Capabilities Extended (GHC_CAP2) – Offset 24
This register indicates basic capabilities of the HBA to driver software. The RWO bits in this register are only cleared upon PLTRST#.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
30:6 | - | - | Reserved
|
5 | 1h | RW/O | DEVSLP Entrance from Slumber Only (DESO) This bit specifies that the HBA shall only assert DEVSLP if the interface is in Slumber. |
4 | 1h | RW/O/V | Supports Aggressive DEVSLP Management (SADM) 0 = Aggressive DEVSLP Management is not supported and software shall treat the PxDEVSLP.ADSE field as reserved. |
3 | 1h | RW/O/V | Supports DEVSLP (SDS) 0 = DEVSLP is not supported. |
2 | 1h | RW/O/V | Automatic Partial to Slumber Transitions (APST) 0 = Automatic Partial to Slumber Transition is not supported. |
1 | - | - | Reserved
|
0 | 0h | RO | BIOS/OS Handoff (BOH) Not supported. |