RE: [ACPI] Harddisk problems after S3

[Li, S. <sha...@in...>]

Hi,
[Send this to the ide maintainer to seek his help]

I encounter a similar issue, which I think it's the ide suspend/resume
issue. Every time if I heard the sound of the harddisk initializing, my
desktop's S3 resume works. Every time I didn't hear it, the resume
hangs. And after I reboot the system the BIOS reports a checksum error.
The symptom always can be reproduced.

From the ACPI spec, harddisk hasn't standard method to support
suspend/resume. And it should do:
Powering down (or .suspend method)
*	Call _GTM.
*	Power down drive (calls _PS3 method and turns off power planes).
Powering up (or .resume method):
*	Power up drive (calls _PS0 method if present and turns on power
planes).
*	Call _STM passing info from _GTM (possibly modified), with ID
data from
*	each drive.
*	Initialize the channel.
*	May modify the results of _GTF.
*	For each drive:
		Call _GTF.
		Execute task file (possibly modified).

I could help write the ACPI related code for this, but I know few about
the ide controller.

Thanks,
Shaohua

>
>On Tue, 2005-03-29 at 20:57 +0200, Pavel Machek wrote:
>
>> Ask ide maintainers...
>
>The fact that we do nothing with the _GTM, _STM and _GTF methods
doesn't
>help here. Implementing those ought to help on a range of IDE resume
>issues.