Re: EC SCI model?

[Ducrot Bruno <ducrot-kk6yZipjEM5g9hUCZPvPmw@public.gmane.org>]

On Tue, Jun 24, 2003 at 04:40:23PM -0700, Nate Lawson wrote:
> I am a FreeBSD developer but this is a more general question with ACPI.  I
> looked through the spec (especially 13 Embedded Controller) and I have a
> question regarding the IBF/OBF stuff.  Testing has shown that I get
> multiple callbacks of my EcGpeHandler() routine even when IBF and OBF have
> not changed.  Isn't the GPE only supposed to trigger when they change (and
> only once)?  I've gotten more reliability by waiting for the GPE, checking
> the status and if it isn't what I'm waiting for, go back to sleep.
> 
> Also, what is the procedure for sleeping while holding the ACPI Global
> Lock?  I need to sleep while waiting for the GPE to trigger between each
> phase of read and write (i.e. command, address, data).  I'm not using
> burst mode but may consider implementing it to make this easier and avoid
> the sleep altogether.
> 

Look at the NetBSD implementation of the EC.  It look stable for me, and do not
have the GPL issue...

-- 
Ducrot Bruno

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.


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