CNT3
tnt_writeb(tnt_priv, (hw_count >> 24) & 0xff, CNT3);
count |= (tnt_readb(tnt_priv, CNT3) << 24) & 0xff000000;
tnt_writeb(tnt_priv, (hw_count >> 24) & 0xff, CNT3);
rt2x00mmio_register_write(rt2x00dev, CNT3, 0x3f080000);
reg = rt2x00mmio_register_read(rt2x00dev, CNT3);
rt2x00mmio_register_write(rt2x00dev, CNT3, 0);