On Wed, 2008-04-30 at 11:02 -0500, Scott Wood wrote: > On Wed, Apr 30, 2008 at 05:34:56PM +0200, Joakim Tjernlund wrote: > > > > On Wed, 2008-04-30 at 10:21 -0500, Scott Wood wrote: > > > On Wed, Apr 30, 2008 at 05:11:09PM +0200, Joakim Tjernlund wrote: > > > > Yet the in_bex()/out_bex() functions in PowerPC linux uses sync and all > > > > SOC drivers are encouraged to use them. What a waste :( > > > > > > sync is needed in some of the cases, to sync I/O accesses with DMA buffer > > > accesses. Ideally, we could trust the driver writers to put > > > synchronization in where needed, but it seems Linux has too much x86 > > > heritage for that. > > > > Perhaps, is sync needed in this case for non-smp too? or is eieio > > enough? > > Yes, sync is needed -- eieio doesn't order between stores to cacheable > memory and stores to cache-inhibited memory.
OK, thanks > > > Anyway, just have a look at ucc_geth > > Do I have to? :-) Yes, it needs a little love here and there :) Especially Timur, his little "rename the tx/rx clock" trick costed me a few days :) Jocke ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users
