3-7: reserved and should be ignored by OSPM
[0x5-0x7] reserved
[0x8] Command data: (DWORD access)
- in case of error or unsupported command reads is 0xFFFFFFFF
- current 'Command field' value:
- 0: returns PXM value corresponding to device
+ contains 0 unless value last stored in 'Command field' is one of:
+ 0: contains 'CPU selector' value of a CPU with pending event[s]
write access:
offset:
value:
0: selects a CPU device with inserting/removing events and
following reads from 'Command data' register return
- selected CPU (CPU selector value). If no CPU with events
- found, the current CPU selector doesn't change and
- corresponding insert/remove event flags are not set.
+ selected CPU ('CPU selector' value).
+ If no CPU with events found, the current 'CPU selector' doesn't
+ change and corresponding insert/remove event flags are not modified.
1: following writes to 'Command data' register set OST event
register in QEMU
2: following writes to 'Command data' register set OST status