VLV_IER
VLV_IER, \
ier = intel_uncore_rmw(&dev_priv->uncore, VLV_IER, ~0, 0);
intel_uncore_write(&dev_priv->uncore, VLV_IER, ier);
ier = intel_uncore_rmw(&dev_priv->uncore, VLV_IER, ~0, 0);
intel_uncore_write(&dev_priv->uncore, VLV_IER, ier);