[LinuxBIOS] Geode GX1/5530: How to forward SMI to a regular IRQ

Tim Crawford tcrawford at lnxi.com
Mon Aug 7 23:09:09 CEST 2006

If I understand the question correctly Juergen want to tell the
chipset to issue a IRQ not a SMI.  There is no SMM code in LB.

>>> Ronald G Minnich <rminnich at lanl.gov> 08/07/06 2:48 PM >>> 
Juergen Beisert wrote:
> Hi all,
> On Monday 07 August 2006 11:19, myself wrote:
>>I try to write a native sound driver for the Geode GX1/5530a Companion
>>chip. Problem here: The sound chip only generates SMI. Does anyone knows a
>>trick or a chipset switch that let me forward this SMI to a regular IRQ?
>>Its too ugly to use a polling loop.... ;- )
> Sorry. I think I must explain: I'm using linuxbios on this Geode system, so 
> there is no SMM emulation of the sound hardware. Thats why I'm searching for 
> a solution to forward the SMI to a regular IRQ. Has someone experience in 
> programming this SMM code? Maybe a short routine that only triggers a regular 
> interrupt when an SMI occures would help.

Is there some reason to continue to use SMI? why not just drive the 
hardware directly w/o smi?


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