Re: [Qemu-devel] [PATCH][RFC v2 3/7] vl: create power chip device

[li guang]

在 2013-04-09二的 09:43 +0200，Paolo Bonzini写道：
> Il 09/04/2013 09:34, li guang ha scritto:
> > Hmm ... maybe, but,
> > S-states may be more exactly,
> > S0 -> power on
> > S3 -> suspend
> > S5 -> power off
> > but that are conceptual, 
> > actually, I just want centralize controlling
> > of power state transition of whole emulated machine.
> 
> That is already there:
> 
> qemu_system_suspend_request, qemu_register_suspend_notifier
>    for S0->S3
> 
> qemu_system_wakeup_request, qemu_register_wakeup_notifier
>    for S3->S0
> 
> qemu_system_powerdown_request, qemu_register_powerdown_notifier
>    for Sx->S5
> 
> and the reset mechanism for S5->S0.

Yep, I'm trying to supersede these functions
by my power chip emulation. 

> Most of these should only be used by one "power management device" on
> the board (e.g. the PIIX3 or ICH9 power management devices in hw/acpi/*)
> and distributed to the other devices via whatever buses exist on the
> real machine.