_CACHE_UNCACHED_ACCELERATED
#ifndef _CACHE_UNCACHED_ACCELERATED
c->writecombine = _CACHE_UNCACHED_ACCELERATED;
c->writecombine = _CACHE_UNCACHED_ACCELERATED;
c->writecombine = _CACHE_UNCACHED_ACCELERATED;
#define pgprot_fb(_prot) (((_prot) & (~_CACHE_MASK)) | _CACHE_UNCACHED_ACCELERATED)