MCHBAR_SIZE
base = mchbar + pmc * MCHBAR_SIZE;
window = ioremap(base, MCHBAR_SIZE);
window = ioremap(mchbar, MCHBAR_SIZE * 2);
pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
MCHBAR_SIZE, MCHBAR_SIZE,