112 static inline u32 vdc_tx_dring_avail(struct vio_dring_state *dr)  in vdc_tx_dring_avail()  argument
114 	return vio_dring_avail(dr, VDC_TX_RING_SIZE);  in vdc_tx_dring_avail()
172 	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];  in vdc_blk_queue_start()  local
179 	    vdc_tx_dring_avail(dr) * 100 / VDC_TX_RING_SIZE >= 50) {  in vdc_blk_queue_start()
301 static void vdc_end_one(struct vdc_port *port, struct vio_dring_state *dr,  in vdc_end_one()  argument
304 	struct vio_disk_desc *desc = vio_dring_entry(dr, index);  in vdc_end_one()
313 	dr->cons = vio_dring_next(dr, index);  in vdc_end_one()
330 	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];  in vdc_ack()  local
333 	if (unlikely(pkt->dring_ident != dr->ident ||  in vdc_ack()
338 	vdc_end_one(port, dr, pkt->start_idx);  in vdc_ack()
421 	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];  in __vdc_tx_trigger()  local
429 		.dring_ident		= dr->ident,  in __vdc_tx_trigger()
430 		.start_idx		= dr->prod,  in __vdc_tx_trigger()
431 		.end_idx		= dr->prod,  in __vdc_tx_trigger()
435 	hdr.seq = dr->snd_nxt;  in __vdc_tx_trigger()
440 			dr->snd_nxt++;  in __vdc_tx_trigger()
456 	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];  in __send_request()  local
485 	desc = vio_dring_cur(dr);  in __send_request()
495 	rqe = &port->rq_arr[dr->prod];  in __send_request()
522 		dr->prod = vio_dring_next(dr, dr->prod);  in __send_request()
534 		struct vio_dring_state *dr;  in do_vdc_request()  local
537 		dr = &port->vio.drings[VIO_DRIVER_TX_RING];  in do_vdc_request()
538 		if (unlikely(vdc_tx_dring_avail(dr) < 1))  in do_vdc_request()
555 	struct vio_dring_state *dr;  in generic_request()  local
638 	dr = &port->vio.drings[VIO_DRIVER_TX_RING];  in generic_request()
643 	desc = vio_dring_cur(dr);  in generic_request()
676 		dr->prod = vio_dring_next(dr, dr->prod);  in generic_request()
696 	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];  in vdc_alloc_tx_ring()  local
707 				    dr->cookies, &ncookies,  in vdc_alloc_tx_ring()
714 	dr->base = dring;  in vdc_alloc_tx_ring()
715 	dr->entry_size = entry_size;  in vdc_alloc_tx_ring()
716 	dr->num_entries = VDC_TX_RING_SIZE;  in vdc_alloc_tx_ring()
717 	dr->prod = dr->cons = 0;  in vdc_alloc_tx_ring()
718 	dr->pending = VDC_TX_RING_SIZE;  in vdc_alloc_tx_ring()
719 	dr->ncookies = ncookies;  in vdc_alloc_tx_ring()
726 	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];  in vdc_free_tx_ring()  local
728 	if (dr->base) {  in vdc_free_tx_ring()
729 		ldc_free_exp_dring(port->vio.lp, dr->base,  in vdc_free_tx_ring()
730 				   (dr->entry_size * dr->num_entries),  in vdc_free_tx_ring()
731 				   dr->cookies, dr->ncookies);  in vdc_free_tx_ring()
732 		dr->base = NULL;  in vdc_free_tx_ring()
733 		dr->entry_size = 0;  in vdc_free_tx_ring()
734 		dr->num_entries = 0;  in vdc_free_tx_ring()
735 		dr->pending = 0;  in vdc_free_tx_ring()
736 		dr->ncookies = 0;  in vdc_free_tx_ring()
1064 	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];  in vdc_requeue_inflight()  local
1067 	for (idx = dr->cons; idx != dr->prod; idx = vio_dring_next(dr, idx)) {  in vdc_requeue_inflight()
1068 		struct vio_disk_desc *desc = vio_dring_entry(dr, idx);  in vdc_requeue_inflight()
1074 		dr->cons = vio_dring_next(dr, idx);  in vdc_requeue_inflight()