wbase_m_addr
csrs->POx_WMASK[0].csr = (hose->sg_isa->size - 1) & wbase_m_addr;
csrs->POx_WMASK[1].csr = (__direct_map_size - 1) & wbase_m_addr;
csrs->POx_WMASK[2].csr = (hose->sg_pci->size - 1) & wbase_m_addr;