dma_alloc_coherent [linux arm]

arch/arm/mm/consistent.c
void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp)
{
...
...
v=__dma_alloc(dev, size, handle, gfp, pgprot_noncached(pgprot_kernel));
}