NV_ADMA_CTL_AIEN
writew(tmp & ~(NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
writew(tmp | (NV_ADMA_CTL_AIEN | NV_ADMA_CTL_HOTPLUG_IEN),
writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |
writew((tmp & ~NV_ADMA_CTL_GO) | NV_ADMA_CTL_AIEN |