MessageUnit_UNION
acb->pmu = (struct MessageUnit_UNION *)mem_base0;
acb->pmu = (struct MessageUnit_UNION *)((unsigned long)freesrb+ARCMSR_SRBS_POOL_SIZE);
acb->pmu = (struct MessageUnit_UNION *)mem_base0;
acb->pmu = (struct MessageUnit_UNION *)((unsigned long)acb->uncacheptr+ARCMSR_SRBS_POOL_SIZE);
acb->pmu = (struct MessageUnit_UNION *)mem_base0;
struct MessageUnit_UNION *pmu; /* message unit ATU inbound base address0 */