From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Jander Date: Tue, 19 Jul 2011 14:10:48 +0200 Subject: [U-Boot] i.MX51: FEC: Cache coherency problem? In-Reply-To: <20110719112026.C303D17E88C9@gemini.denx.de> References: <20110718171836.67bfe605@archvile> <4E245C5C.4030303@ti.com> <4E256588.4010301@arcor.de> <20110719131744.403a81e6@archvile> <20110719112026.C303D17E88C9@gemini.denx.de> Message-ID: <20110719141048.72d67cb3@archvile> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Tue, 19 Jul 2011 13:20:26 +0200 Wolfgang Denk wrote: > Dear David Jander, > > In message <20110719131744.403a81e6@archvile> you wrote: > > > > Now I finally know what's wrong and am working on a proposed fix to make > > this one driver cache-aware. > > I would just like to point out that these efforts are highly > appreciated! Thanks. I'll try my best, but I am running out of time, and it is still not as it should. I still have trouble identifying the right place where receive buffer descriptors should be cache-invalidated. At one point, a magic flush_dcache_all() at a certain place in code made it work, but that can't be entirely correct, and if I replace it with only the necessary ranges, it doesn't work correctly anymore, so I guess this flush is also invalidating something I need elsewhere :-( I keep searching.... through the IMO fairly convoluted network code. Best regards, -- David Jander Protonic Holland.