SEND_CM_CREDIT_VL
reg = read_csr(ppd->dd, SEND_CM_CREDIT_VL + (8 * i));
read_one_cm_vl(dd, SEND_CM_CREDIT_VL + (8 * i), &bc->vl[i]);
addr = SEND_CM_CREDIT_VL + (8 * vl);
addr = SEND_CM_CREDIT_VL + (8 * vl);
write_csr(dd, SEND_CM_CREDIT_VL + (8 * i), 0);
write_csr(dd, SEND_CM_CREDIT_VL + (8 * i), 0);