understanding the /proc/dma file

MonMotha monmotha at indy.rr.com
Thu Feb 7 20:04:20 PST 2002


As I recall, cascade is used to add on extra DMAs (and interrupts too, I 
think it's IRQ 3?) from the original intel archectecture.  But I'm not 
an intel archetecture genius, so I could be wrong :)

--MonMotha

Charles Lockhart wrote:
> I've been trying to find out what dma channels my system is using.  When I
> look at the /proc/dma file, it only has one entry:
> 
> 4: cascade
> 
> It contains this even when I have a thread running performing looped dma
> accesses to a device.  What am I missing (besides a brain, thanks)?
> 
> Thanks,
> 
> -Charles
> 
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