CX18_DEBUG_API
CX18_DEBUG_API("%s: req %#010x ack %#010x cmd %#010x err %#010x args%s\n",
CX18_DEBUG_API("%s\tcmd %#010x args%s\n",
CX18_DEBUG_API("waited %u msecs for busy mbox to be acked\n",
CX18_DEBUG_API("mailbox error %08x for command %s\n", err,