COBALT_SYS_STAT_MASK
cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK, irqs);
cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK, 0);
u32 mask = cobalt_read_bar1(cobalt, COBALT_SYS_STAT_MASK);
cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK, mask & ~edge);
cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK,
mask = cobalt_read_bar1(cobalt, COBALT_SYS_STAT_MASK);
cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK,
mask = cobalt_read_bar1(cobalt, COBALT_SYS_STAT_MASK);
cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK,