Re: pmf(9): shutdown & D1/D2 states

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Tue, Jan 08, 2008 at 06:49:34PM -0600, David Young wrote:
> As it turns out, that is not right.  According to PCI System Architecture,
> a device may not initiate PCI bus cycles in D1 or D2 state.

With one exception, it can signal #PME, which could result in an
interrupt on the bridge.

> I think that it is desirable to have the abstract save_power and
> sleep_lightly states that I have described.  Neither state necessarily
> maps to a PCI Dx state, so they should not be named after Dx states.

Yes :-)

Joerg