ICH_REG_GLOB_CNT
control = ich_rd(sc, ICH_REG_GLOB_CNT, 4);
ich_wr(sc, ICH_REG_GLOB_CNT, control, 4);
ich_wr(sc, ICH_REG_GLOB_CNT, ICH_GLOB_CTL_COLD, 4);
ich_wr(sc, ICH_REG_GLOB_CNT, ICH_GLOB_CTL_COLD | ICH_GLOB_CTL_PRES, 4);
ich_wr(sc, ICH_REG_GLOB_CNT, ICH_GLOB_CTL_COLD, 4);