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Re: Interrupt unmask before complete cs8900a interrupt configuration.


On Wed, 2006-01-11 at 13:05 +0100, Andrew Lunn wrote:
> On Wed, Jan 11, 2006 at 11:48:36AM +0100, Jaws wrote:
> > If redboot stops the ethernet chip when lauch the application,
> > I don't understand why before the cs8900a_start, when unmask the interrupt,
> > it is active! The redboot is the current CVS version.
> 
> The current code to stop the driver is:
> 
> static void
> cs8900a_stop(struct eth_drv_sc *sc)
> {
>     cs8900a_priv_data_t *cpd = (cs8900a_priv_data_t *)sc->driver_private;
>     cyg_addrword_t base = cpd->base;
> 
>     put_reg(base, PP_LineCTL, 0);
> }
> 
> Is this enough to really stop the chip?

It's enough to stop the chip from "talking".

I think Jaws has some other problem though - this chip has been used
on a wide variety of platforms and there has never been a problem
with interrupts before.  Perhaps the IRQ being used is shared with
some other piece of hardware which is asserting interrupts?

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------



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