From: Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org>
To: Andre Hedrick <andre-QA/0nRrxPJrNLxjTenLetw@public.gmane.org>
Cc: Alan Cox <alan-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>,
"Faraoni,
Michael"
<Michael.Faraoni-YwRvm6FT6jBDPfheJLI6IQ@public.gmane.org>,
acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: S3 Resume working, but IDE disk hung
Date: Sun, 6 Oct 2002 22:53:58 +0200 [thread overview]
Message-ID: <20021006205358.GA387@elf.ucw.cz> (raw)
In-Reply-To: <Pine.LNX.4.10.10210042302000.10557-100000-eTnbHd5RJ1QZiu+GbOt07GD2FQJk+8+b@public.gmane.org>
Hi!
[Note, you should look at the patch "to prevent data corruption". It
could do the trick. At least it should be good as a base.
> Prior to suspend one needs to :
>
> block all new coming requests.
> flush cache and wait for return.
> disable DMA, and switch to PIO 0.
Why would you want to switch off DMA and go PIO 0?
As long as DMA is not happening (that is not disabled, we just don't
ask drive to do it), you should be fine.
> Resume requires calling :
>
> "do_reset()"
> for (;;)
> if ((check_power()) == active)
> break;
> "piix_config_drive_xfer_rate()"
> unblock request pathway.
You don't need to block/unblock request pathways. kernel/suspend.c takes care of that.
Pavel
--
I'm pavel-7aPAsKgELzg@public.gmane.org "In my country we have almost anarchy and I don't care."
Panos Katsaloulis describing me w.r.t. patents at discuss-q33YXrgyAoMgsBAKwltoeQ@public.gmane.org
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next prev parent reply other threads:[~2002-10-06 20:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-04 15:02 S3 Resume working, but IDE disk hung Faraoni, Michael
[not found] ` <1DD88DDBBB83D6119C8C00096BB0408FA9D2E6-CdvpJ7rTi0s@public.gmane.org>
2002-10-04 15:47 ` Alan Cox
[not found] ` <1033746424.32384.41.camel-MMxVpc8zpTQVh3rx8e9g/fyykp6/JSeS3vcXtXqGYxw@public.gmane.org>
2002-10-05 6:57 ` Andre Hedrick
[not found] ` <Pine.LNX.4.10.10210042302000.10557-100000-eTnbHd5RJ1QZiu+GbOt07GD2FQJk+8+b@public.gmane.org>
2002-10-06 20:53 ` Pavel Machek [this message]
[not found] ` <20021006205358.GA387-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2002-10-08 3:57 ` Andre Hedrick
[not found] ` <Pine.LNX.4.10.10210072045080.31069-100000-eTnbHd5RJ1QZiu+GbOt07GD2FQJk+8+b@public.gmane.org>
2002-10-08 20:20 ` Pavel Machek
-- strict thread matches above, loose matches on Subject: below --
2002-10-09 14:35 Faraoni, Michael
[not found] ` <1DD88DDBBB83D6119C8C00096BB0408FCE495C-CdvpJ7rTi0s@public.gmane.org>
2002-10-09 15:37 ` Alan Cox
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