Re: [ACPI] IDE failure on ACPI resume

[Nate Lawson]

Matthew Garrett wrote:
> On Sun, 2005-03-13 at 20:53 -0800, Nate Lawson wrote:
>
>
> > Sounds like PCI not being completely restored.  We had to work around 
> > some weird ATA issues in FreeBSD with the status register being invalid 
> > for quite a while after resume.  A retry loop was the solution.
>
>
> FreeBSD seems to fail in the same way on the same hardware,
> unfortunately. I'm leaning towards suspecting that we need to be doing
> something with the contents of the _GTF method, but by the looks of that
> that requires us to be able to work out which methods correspond to
> which hardware. Is anyone working on implementing this?

Very interesting.  I was hoping to someday have _GTF et al implemented 
but the ATA knowledge required was above my head.  I also strongly 
suspected that the info published by _GTF would likely be invalid.  Does 
Windows actually use that method or just hardcoded ATA initialization?

--
Nate
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