Hi,
I need to allocate un-cached memory on an 82xx and consistent_alloc() in
arch/ppc/mm/cachemap.c appears to be the thing I need. However, this
code only seems to be built for 8xx and 4xx platforms, and not 6xx
platforms. Specifically, it is built if CONFIG_NOT_COHERENT_CACHE is
defined, which is the case if
CONFIG_8xx = y, or
CONFIG_4xx = y, but not if
CONFIG_6xx = y
Does anybody know why it isn't built for 6xx cores?
I'm working on the ATM driver and it seems that certain external memory
areas accessed by the PQII CPM by-pass the cache. So it would seem to
me that CONFIG_NOT_COHERENT_CACHE would actually be applicable for these
processors too....
Alex
