From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: David Brownell <david-b@pacbell.net>
Cc: Pavel Machek <pavel@ucw.cz>,
Linux Kernel list <linux-kernel@vger.kernel.org>,
Patrick Mochel <mochel@digitalimplant.org>
Subject: Re: Solving suspend-level confusion
Date: Sun, 08 Aug 2004 09:53:41 +1000 [thread overview]
Message-ID: <1091922821.14105.12.camel@gaston> (raw)
In-Reply-To: <200408071514.49498.david-b@pacbell.net>
On Sun, 2004-08-08 at 08:14, David Brownell wrote:
> On Friday 06 August 2004 13:04, Pavel Machek wrote:
>
> > > These look to me like "wrong device-level suspend state" cases.
> >
> > Actually, suspend-to-disk has to suspend all devices *twices*. Once it
> > wants them in "D0 but DMA/interrupts stopped", and once in "D3cold but
> > I do not really care power is going to be cut anyway". I do not think
> > this can be expressed with PCI states.
>
> How are those different from "PCI_D1" then later "PCI_D3hot"?
D1 is a real HW state, we don't really need to enter it at all. On some
chip, suspending to D1 require some mess that we don't need here. We
just need to block the driver.
> I'd understood that loss of VAUX was always possible, so robust
> drivers always had to handle resume from PCI_D3cold.
When they can ....
Ben.
prev parent reply other threads:[~2004-08-07 23:57 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-30 16:44 Solving suspend-level confusion Pavel Machek
2004-07-30 22:39 ` Benjamin Herrenschmidt
2004-07-30 23:06 ` Pavel Machek
2004-07-31 4:02 ` David Brownell
2004-07-31 4:36 ` Pavel Machek
2004-07-31 5:49 ` Benjamin Herrenschmidt
2004-07-31 14:23 ` David Brownell
2004-07-31 17:01 ` Oliver Neukum
2004-07-31 17:51 ` David Brownell
2004-08-01 0:41 ` David Brownell
2004-08-01 1:34 ` Benjamin Herrenschmidt
2004-08-02 16:38 ` David Brownell
2004-08-03 0:38 ` Benjamin Herrenschmidt
2004-08-04 2:28 ` David Brownell
2004-08-04 2:26 ` Nigel Cunningham
2004-08-04 2:53 ` Benjamin Herrenschmidt
2004-08-04 2:52 ` Nigel Cunningham
2004-08-04 4:14 ` Benjamin Herrenschmidt
2004-08-04 4:25 ` Nigel Cunningham
2004-08-04 4:52 ` Benjamin Herrenschmidt
2004-08-04 4:54 ` Nigel Cunningham
2004-08-04 5:03 ` Benjamin Herrenschmidt
2004-08-04 5:05 ` Nigel Cunningham
2004-08-05 10:05 ` Nigel Cunningham
2004-08-05 22:31 ` Nigel Cunningham
2004-08-06 0:39 ` Benjamin Herrenschmidt
2004-08-06 21:30 ` Pavel Machek
2004-08-06 21:29 ` Pavel Machek
2004-08-06 22:27 ` Benjamin Herrenschmidt
2004-08-06 22:37 ` Pavel Machek
2004-08-06 21:26 ` Pavel Machek
2004-08-05 1:29 ` David Brownell
2004-08-05 10:19 ` Nigel Cunningham
2004-08-06 0:32 ` David Brownell
[not found] ` <1091772799.2532.50.camel@laptop.cunninghams>
2004-08-07 22:24 ` David Brownell
2004-08-04 2:56 ` Benjamin Herrenschmidt
2004-08-04 3:30 ` David Brownell
2004-08-04 4:19 ` Benjamin Herrenschmidt
2004-08-04 4:47 ` What PM should be and do (Was Re: Solving suspend-level confusion) Nigel Cunningham
2004-08-04 4:53 ` Benjamin Herrenschmidt
2004-08-04 4:59 ` Nigel Cunningham
2004-08-08 16:54 ` Pavel Machek
2004-08-08 21:55 ` Nigel Cunningham
2004-08-09 8:42 ` Pavel Machek
2004-08-05 18:19 ` Greg KH
2004-08-05 22:14 ` Nigel Cunningham
2004-08-07 0:08 ` Éric Brunet
2004-08-08 19:48 ` Pavel Machek
2004-08-11 21:23 ` Greg KH
2004-08-08 0:54 ` David Brownell
2004-08-06 21:21 ` Solving suspend-level confusion Pavel Machek
2004-07-31 21:09 ` Benjamin Herrenschmidt
2004-08-02 16:40 ` David Brownell
2004-08-03 0:50 ` Benjamin Herrenschmidt
2004-08-07 23:30 ` David Brownell
2004-08-06 21:10 ` Pavel Machek
2004-08-07 23:23 ` David Brownell
2004-08-08 17:16 ` Pavel Machek
2004-08-06 20:04 ` Pavel Machek
2004-08-07 22:14 ` David Brownell
2004-08-07 23:53 ` Benjamin Herrenschmidt [this message]
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