pcieadm_cfgspace_getcap32
uint32_t tphcap = pcieadm_cfgspace_getcap32(walkp, 4);
uint32_t cap = pcieadm_cfgspace_getcap32(walkp, 4);
uint32_t cap = pcieadm_cfgspace_getcap32(walkp, 4);
uint32_t cap = pcieadm_cfgspace_getcap32(walkp, 4);
uint32_t cap = pcieadm_cfgspace_getcap32(walkp, 4);
uint32_t cap = pcieadm_cfgspace_getcap32(walkp, 4);
uint32_t ap_cap = pcieadm_cfgspace_getcap32(walkp, 4);