450 uhci_td_walk_init(mdb_walk_state_t *wsp)  in uhci_td_walk_init()  argument
452 	if (wsp->walk_addr == 0)  {  in uhci_td_walk_init()
456 	wsp->walk_data = mdb_alloc(sizeof (uhci_td_t), UM_SLEEP | UM_GC);  in uhci_td_walk_init()
457 	wsp->walk_arg = mdb_alloc(sizeof (uhci_state_t), UM_SLEEP | UM_GC);  in uhci_td_walk_init()
464 	if (find_uhci_statep((void *)wsp->walk_addr, UHCI_TD,  in uhci_td_walk_init()
465 	    wsp->walk_arg) != 1) {  in uhci_td_walk_init()
479 uhci_td_walk_step(mdb_walk_state_t *wsp)  in uhci_td_walk_step()  argument
482 	uhci_state_t	*uhcip = (uhci_state_t *)wsp->walk_arg;  in uhci_td_walk_step()
485 	if (mdb_vread(wsp->walk_data, sizeof (uhci_td_t), wsp->walk_addr)  in uhci_td_walk_step()
487 		mdb_warn("failed to read td at %p", wsp->walk_addr);  in uhci_td_walk_step()
491 	status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,  in uhci_td_walk_step()
492 	    wsp->walk_cbdata);  in uhci_td_walk_step()
495 	wsp->walk_addr = ((uhci_td_t *)wsp->walk_data)->link_ptr;  in uhci_td_walk_step()
498 	if (wsp->walk_addr == 0 || wsp->walk_addr & HC_END_OF_LIST)  in uhci_td_walk_step()
502 	if (((((uhci_td_t *)wsp->walk_data)->link_ptr) & HC_QUEUE_HEAD)  in uhci_td_walk_step()
508 	wsp->walk_addr &= QH_LINK_PTR_MASK; /* there is no TD_LINK_PTR_MASK */  in uhci_td_walk_step()
510 	if (wsp->walk_addr == 0)  in uhci_td_walk_step()
517 	wsp->walk_addr = (uintptr_t)TD_VADDR(wsp->walk_addr);  in uhci_td_walk_step()
529 uhci_qh_walk_init(mdb_walk_state_t *wsp)  in uhci_qh_walk_init()  argument
531 	if (wsp->walk_addr == 0)  in uhci_qh_walk_init()
534 	wsp->walk_data = mdb_alloc(sizeof (queue_head_t), UM_SLEEP | UM_GC);  in uhci_qh_walk_init()
535 	wsp->walk_arg = mdb_alloc(sizeof (uhci_state_t), UM_SLEEP | UM_GC);  in uhci_qh_walk_init()
542 	if (find_uhci_statep((void *)wsp->walk_addr, UHCI_QH,  in uhci_qh_walk_init()
543 	    (uhci_state_t *)wsp->walk_arg) != 1) {  in uhci_qh_walk_init()
557 uhci_qh_walk_step(mdb_walk_state_t *wsp)  in uhci_qh_walk_step()  argument
560 	uhci_state_t	*uhcip = (uhci_state_t *)wsp->walk_arg;  in uhci_qh_walk_step()
563 	if (wsp->walk_addr == 0)	/* Should never occur */  in uhci_qh_walk_step()
566 	if (mdb_vread(wsp->walk_data, sizeof (queue_head_t), wsp->walk_addr)  in uhci_qh_walk_step()
568 		mdb_warn("failure reading qh at %p", wsp->walk_addr);  in uhci_qh_walk_step()
572 	status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,  in uhci_qh_walk_step()
573 	    wsp->walk_cbdata);  in uhci_qh_walk_step()
576 	wsp->walk_addr = ((queue_head_t *)wsp->walk_data)->link_ptr;  in uhci_qh_walk_step()
580 	if (wsp->walk_addr == 0 || wsp->walk_addr & HC_END_OF_LIST)  {  in uhci_qh_walk_step()
585 	if (((((queue_head_t *)wsp->walk_data)->link_ptr) & HC_QUEUE_HEAD)  in uhci_qh_walk_step()
591 	wsp->walk_addr &= QH_LINK_PTR_MASK;  in uhci_qh_walk_step()
593 	if (wsp->walk_addr == 0)  in uhci_qh_walk_step()
600 	wsp->walk_addr = (uintptr_t)QH_VADDR(wsp->walk_addr);  in uhci_qh_walk_step()