SEND_CM_GLOBAL_CREDIT_TOTAL_CREDIT_LIMIT_SHIFT
>> SEND_CM_GLOBAL_CREDIT_TOTAL_CREDIT_LIMIT_SHIFT)
reg |= (u64)limit << SEND_CM_GLOBAL_CREDIT_TOTAL_CREDIT_LIMIT_SHIFT;
reg |= (u64)vl15buf << SEND_CM_GLOBAL_CREDIT_TOTAL_CREDIT_LIMIT_SHIFT;