pmcs_phy_name
pmcs_phy_name(pwp, phyp, phyp->path, sizeof (phyp->path));
pmcs_phy_name(pwp, ctmp, ctmp->path, sizeof (ctmp->path));
pmcs_phy_name(pwp, pptr->parent, obuf, olen);
void pmcs_phy_name(pmcs_hw_t *, pmcs_phy_t *, char *, size_t);