Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
Device Control (DEVIDLE_CONTROL) – Offset 24c
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
30:5 | - | - | Reserved
|
4 | 0h | RO | Interrupt Request Capable (intr_req_capable) Set to 1 by HW if it is capable of generating an interrupt on command completion, else 0. |
3 | 1h | RW/1C | Restore Required (restore_required) When set (by HW), SW must restore state to the controller. The state may have been lost due to a reset or full power lost. |
2 | 0h | RW | Device Idle (DEVIDLE) SW sets this bit to ‘1’ to move the function into the DevIdle state. |
1 | - | - | Reserved
|
0 | 0h | RO | Command In Progress (cmd_in_progress) HW sets this bit on a 1->0 or 0->1 transition of DEVIDLE. |