gen_spu_event
gen_spu_event(ctx, MFC_PU_INT_MAILBOX_AVAILABLE_EVENT);
gen_spu_event(ctx, MFC_SPU_MAILBOX_WRITTEN_EVENT);
gen_spu_event(ctx, MFC_SIGNAL_1_EVENT);
gen_spu_event(ctx, MFC_SIGNAL_2_EVENT);
gen_spu_event(ctx, MFC_PU_MAILBOX_AVAILABLE_EVENT);