SEND_CM_CREDIT_VL15
read_one_cm_vl(dd, SEND_CM_CREDIT_VL15, &bc->vl[15]);
addr = SEND_CM_CREDIT_VL15;
addr = SEND_CM_CREDIT_VL15;
write_csr(dd, SEND_CM_CREDIT_VL15, 0);
write_csr(dd, SEND_CM_CREDIT_VL15, (u64)vl15buf
write_csr(dd, SEND_CM_CREDIT_VL15, 0);