On Fri, 2007-06-08 at 16:07 +0200, BOUIN Alexandre wrote:
> We (Adeneo) are working on a ARM AT91 RTAI. We
> encountered some difficulties such tsc one : in
> periodic mode, we reload our timer automatically in
> order to avoid reprogramming it. TC timer increments a
> 16 byte register, which is not enough for a tsc (64
> bytes). tsc need to be emulated on ARM.
> With oneshot mode, tsc is updating the 4 least
> significant bytes and then increments other bytes each
> time counter go back to zero value.
> With our periodic mode, timer reloads himself so we
> need to change tsc emulation by incrementing tsc like
> this : tsc += period.
> We made some evolutions on ipipe which will be applied
> to a hal patch.
> Are you interrested in a such patch for a periodic
> mode on ARM ?
Support for periodic mode has been recently deprecated in the I-pipe
patch, and will be discontinued in future releases.
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