ioremap_nocache
ggtt->gsm = ioremap_nocache(phys_addr, size);
return ioremap_nocache(offset, size);
ioremap_nocache(mem->bus.base + mem->bus.offset,
addr = ioremap_nocache(mem->bus.base + mem->bus.offset, mem->bus.size);
map->virtual = ioremap_nocache(bo->mem.bus.base + bo->mem.bus.offset + offset,