i2o_bsa_cache_flush_message
struct i2o_bsa_cache_flush_message *msg;
msg = (struct i2o_bsa_cache_flush_message *)(psc->iop->ibase + mfa);
bzero(msg, sizeof(struct i2o_bsa_cache_flush_message));
msg->message_size = sizeof(struct i2o_bsa_cache_flush_message) >> 2;