[ECOS] bug about MPC8260 FEC driver?

Gary D. Thomas gary.thomas@mind.be
Mon Mar 3 13:51:00 GMT 2003


On Sun, 2003-03-02 at 23:45, He HaiYang wrote:
> I use below command to get source tree.
>     cvs -z3 -d :pserver:anoncvs@sources.redhat.com:/cvs/ecos co -P ecos
> I think it is the lastest.
> 
> In fact, I couldn't see other version of if_fec.c in its log.
> 

I missed the fact that you are using QUICC2, sorry.  That driver
was contributed and has not seen the same level of testing or
improvements.

Try looking at devs/eth/powerpc/fec/current/src/if_fec.c to see how
to fix it up.

Note: sending six (6) copies of the same email was not necessary.

> ----- Original Message ----- 
> From: Gary D. Thomas 
> To: he_hai_yang 
> Cc: eCos Discussion 
> Sent: Sunday, March 02, 2003 8:22 PM
> Subject: Re: [ECOS] bug about MPC8260 FEC driver?
> 
> 
> On Sat, 2003-03-01 at 22:54, he_hai_yang wrote:
> > in file ...\ecos\packages\devs\eth\powerpc\quicc2\current\src\if_fec.c
> > founction fec_eth_init():
> > 
> > there are code :
> > if (cache_state) {
> >       HAL_DCACHE_DISABLE();
> >       HAL_DCACHE_INVALIDATE_ALL();
> >     }
> > 
> > i think it should be:
> > if (cache_state) {
> >       HAL_DCACHE_SYNC();
> >       HAL_DCACHE_DISABLE();
> >     }
> > 
> > If we call HAL_DCACHE_DISABLE() here, some modified in the ram will lose. In our test, once system goes here, the value of net_mem (in support.c) will change to 0.
> >  
> 
> What version of the code are you referring to?  I made major
> changes in how the data cache is handled in this driver a 
> long time ago (back in October, 2002).
> 
> Try updating to the latest CVS and see if you still have problems.
-- 
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|       Mind: Embedded Linux and eCos Development        |
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| Gary Thomas              email:  gary.thomas@mind.be   |
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